java.lang.Object
- java.lang.Enum<NOAOExt>
- - nom.tam.fits.header.extra.NOAOExt

All Implemented Interfaces:

java.io.Serializable, java.lang.Comparable<NOAOExt>, IFitsHeader
```
public enum NOAOExt
extends java.lang.Enum<NOAOExt>
implements IFitsHeader
```
This keyword dictionary defines keywords which may be used in image data recorded by the data acquisition system. It currently does not consider keywords for data processing. Most of the keywords defined here will not be used. New parameters must be added to the logical class heirarchy and then a keyword defined in this dictionary before use in image data.
See Also:

http://iraf.noao.edu/iraf/web/projects/ccdmosaic/imagedef/fitsdic.html

Nested Class Summary
- Nested classes/interfaces inherited from interface nom.tam.fits.header.IFitsHeader
  IFitsHeader.HDU, IFitsHeader.SOURCE, IFitsHeader.VALUE

Enum Constant Summary

Enum Constants
Enum Constant	Description
`ACTFREQ`	default value = none
`ACTHWV`	default value = none
`ACTMJD`	Times for the active optics sensor measurements given as modified Julian dates.
`ACTMJDn`	Times for the active optics sensor measurements given as modified Julian dates.
`ACTPAN`	Active optics system position angle measurements in appropriate units.
`ACTPANn`	Active optics system position angle measurements in appropriate units.
`ACTPOS`	Active optics system linear position sensor measurements in appropriate units.
`ACTPOSn`	Active optics system linear position sensor measurements in appropriate units.
`ACTPRE`	Active optics system pressure sensor measurements in appropriate units.
`ACTPREn`	Active optics system pressure sensor measurements in appropriate units.
`ACTSTAT`	default value = none
`ACTSWV`	default value = none
`ACTTEM`	Active optics system temperature sensor measurements in degrees Celsius.
`ACTTEMn`	Active optics system temperature sensor measurements in degrees Celsius.
`ACTVOL`	Active optics voltage sensor measurements in volts.
`ACTVOLn`	Active optics voltage sensor measurements in volts.
`ADAMJD`	Times for the adapter sensor measurements given as modified Julian dates.
`ADAMJDn`	Times for the adapter sensor measurements given as modified Julian dates.
`ADAPAN`	Adapter position angle measurements in appropriate units.
`ADAPANn`	Adapter position angle measurements in appropriate units.
`ADAPOS`	Adapter linear position sensor measurements in appropriate units.
`ADAPOSn`	Adapter linear position sensor measurements in appropriate units.
`ADAPRE`	Adapter pressure sensor measurements in appropriate units.
`ADAPREn`	Adapter pressure sensor measurements in appropriate units.
`ADAPSWV`	default value = none
`ADAPTER`	default value = none
`ADASTAT`	default value = none
`ADATEM`	Adapter temperature sensor measurements in degrees Celsius.
`ADATEMn`	Adapter temperature sensor measurements in degrees Celsius.
`ADAVOL`	Adapter voltage sensor measurements in volts.
`ADAVOLn`	Adapter voltage sensor measurements in volts.
`ADC`	Atmospheric dispersion compensator hardware identification.
`ADCMJD`	Times for the ADC sensor measurements given as modified Julian dates.
`ADCMJDn`	Times for the ADC sensor measurements given as modified Julian dates.
`ADCPAN`	ADC position angle measurements in appropriate units.
`ADCPANn`	ADC position angle measurements in appropriate units.
`ADCPOS`	ADC linear position sensor measurements in appropriate units.
`ADCPOSn`	ADC linear position sensor measurements in appropriate units.
`ADCPRE`	ADC pressure sensor measurements in appropriate units.
`ADCPREn`	ADC pressure sensor measurements in appropriate units.
`ADCSTAT`	ADC status.
`ADCSWV`	Atmospheric dispersion compensator software identification.
`ADCTEM`	ADC temperature sensor measurements in degrees Celsius.
`ADCTEMn`	ADC temperature sensor measurements in degrees Celsius.
`ADCVOL`	ADC voltage sensor measurements in volts.
`ADCVOLn`	ADC voltage sensor measurements in volts.
`ADECnnn`	Declination of the aperture(s).
`ADEUnnn`	Declination unit.
`ADODEC`	Object declination for wavefront sensing.
`ADODECU`	Declination unit.
`ADOEPOCH`	Object coordinate epoch for wavefront sensing.
`ADOEQUIN`	Object coordinate system equinox for wavefront sensing.
`ADOFREQ`	default value = none
`ADOHWV`	default value = none
`ADOMJD`	Times for the adaptive optics sensor measurements given as modified Julian dates.
`ADOMJDn`	Times for the adaptive optics sensor measurements given as modified Julian dates.
`ADOPAN`	Adaptive optics system position angle measurements in appropriate units.
`ADOPANn`	Adaptive optics system position angle measurements in appropriate units.
`ADOPOS`	Adaptive optics system linear position sensor measurements in appropriate units.
`ADOPOSn`	Adaptive optics system linear position sensor measurements in appropriate units.
`ADOPRE`	Adaptive optics system pressure sensor measurements in appropriate units.
`ADOPREn`	Adaptive optics system pressure sensor measurements in appropriate units.
`ADORA`	Object right ascension for wavefront sensing.
`ADORADEC`	Object coordinate system type for wavefront sensing.
`ADORAU`	Right ascension unit.
`ADOSTAT`	default value = none
`ADOSWV`	default value = none
`ADOTEM`	Adaptive optics system temperature sensor measurements in degrees Celsius.
`ADOTEMn`	Adaptive optics system temperature sensor measurements in degrees Celsius.
`ADOTYPE`	Type of object used for wavefront sensing.
`ADOVOL`	Adaptive optics system voltage sensor measurements in volts.
`ADOVOLn`	Adaptive optics system voltage sensor measurements in volts.
`AEPOnnn`	Epoch of the coordinates for the aperture(s).
`AEQUnnn`	Coordinate system equinox for the aperture(s).
`AIRMASSn`	The computed airmass(es) at the time(s) given by the AMMJDn keywords.
`AMMJD`	Times for the airmass calculation given as modified Julian dates.
`AMMJDn`	Times for the airmass calculation given as modified Julian dates.
`AMPINTEG`	Amplifier integration or sample time.
`AMPMJD`	Times for the amplifier sensor measurements given as modified Julian dates.
`AMPMJDn`	Times for the amplifier sensor measurements given as modified Julian dates.
`AMPNAME`	Amplifier name.
`AMPPAN`	CCD amplifier position angle measurements in appropriate units.
`AMPPANn`	CCD amplifier position angle measurements in appropriate units.
`AMPPOS`	CCD amplifier linear position sensor measurements in appropriate units.
`AMPPOSn`	CCD amplifier linear position sensor measurements in appropriate units.
`AMPPRE`	CCD amplifier pressure sensor measurements in appropriate units.
`AMPPREn`	CCD amplifier pressure sensor measurements in appropriate units.
`AMPREAD`	Amplifier unbinned pixel read time.
`AMPSAMPL`	CCD amplifier sampling method used.
`AMPSEC`	Mapping of the CCD section to amplifier coordinates.
`AMPSIZE`	The logical unbinned size of the amplifier readout in section notation.
`AMPTEM`	CCD amplifier temperature sensor measurements in degrees Celsius.
`AMPTEMn`	CCD amplifier temperature sensor measurements in degrees Celsius.
`AMPVOL`	CCD amplifier voltage sensor measurements in volts.
`AMPVOLn`	CCD amplifier voltage sensor measurements in volts.
`APAUnnn`	Aperture position angle unit.
`APDEC`	Declination of the aperture(s).
`APDECU`	Declination unit.
`APDInnn`	Aperture diameter of the aperture(s) for circular apertures and fibers.
`APEPOCH`	Epoch of the coordinates for the aperture(s).
`APEQUIN`	Coordinate system equinox for the aperture(s).
`APERDIA`	Aperture diameter of the aperture(s) for circular apertures and fibers.
`APERLEN`	Aperture length of the aperture(s) for slit apertures.
`APERnnn`	Aperture identification.
`APERPA`	Aperture position angle of the aperture(s) on the sky.
`APERWID`	Aperture identification.
`APLEnnn`	Aperture length of the aperture(s) for slit apertures.
`APPAnnn`	Aperture position angle of the aperture(s) on the sky.
`APPAUNIT`	Aperture position angle unit.
`APRA`	Right ascension of the aperture(s).
`APRADEC`	Aperture coordinate system type for the aperture(s).
`APRAU`	Right ascension unit.
`APTYnnn`	Aperture type.
`APTYPE`	Aperture type.
`APUNIT`	Units of aperture dimensions.
`APUNnnn`	Units of aperture dimensions.
`APWInnn`	Aperture width of the aperture(s) for slit apertures.
`ARAnnn`	Right ascension of the aperture(s).
`ARAUnnn`	Right ascension unit.
`ARCHHWV`	Archive hardware version.
`ARCHID`	Archive identification.
`ARCHIVE`	The archive name in which the observation is archived.
`ARCHSTAT`	Archive status of data.
`ARCHSWV`	Archive software version.
`ARCONG`	Arcon predicted gain.
`ARCONGI`	Arcon gain index value.
`ARCONRN`	Arcon predicted RMS readout noise.
`ARCONWD`	Arcon waveform complilation date.
`ARCONWM`	Arcon waveform options enabled.
`ARDSnnn`	Aperture coordinate system type for the aperture(s).
`ATMn_n`	Transformation matrix between CCD and amplifier coordinates.
`ATVn`	Transformation origin vector between CCD and amplifier coordinates.
`BIASnnn`	Section of the recorded image containing overscan or prescan data.
`BIASSEC`	Section of the recorded image containing overscan or prescan data.
`BPM`	Description of bad pixels.
`CAMCONF`	Camera configuration.
`CAMERA`	Camera name.
`CAMFOCUS`	Camera focus.
`CAMHWV`	Camera hardware version.
`CAMMJD`	Times for the instrument sensor measurements given as modified Julian dates.
`CAMMJDn`	Times for the instrument sensor measurements given as modified Julian dates.
`CAMPAN`	Camera position angle measurements in appropriate units.
`CAMPANn`	Camera position angle measurements in appropriate units.
`CAMPOS`	Camera linear position sensor measurements in appropriate units.
`CAMPOSn`	Camera linear position sensor measurements in appropriate units.
`CAMPRE`	Camera pressure sensor measurements in appropriate units.
`CAMPREn`	Camera pressure sensor measurements in appropriate units.
`CAMSTAT`	Camera status.
`CAMSWV`	Camera software version.
`CAMTEM`	Camera temperature sensor measurements in degrees Celsius.
`CAMTEMn`	Camera temperature sensor measurements in degrees Celsius.
`CAMVOL`	Camera voltage sensor measurements in volts.
`CAMVOLn`	Camera voltage sensor measurements in volts.
`CCDDEC`	Declination of the CCD center.
`CCDDECU`	Declination unit.
`CCDEPOCH`	Epoch of the CCD center coordinates.
`CCDEQUIN`	CCD coordinate system equinox.
`CCDHWV`	CCD hardware version
`CCDMJD`	Times for the CCD sensor measurements given as modified Julian dates.
`CCDMJDn`	Times for the CCD sensor measurements given as modified Julian dates.
`CCDNAME`	CCD identification.
`CCDNAMPS`	Number of amplifiers used to readout the CCD.
`CCDPAN`	CCD position angle measurements in appropriate units.
`CCDPANn`	CCD position angle measurements in appropriate units.
`CCDPOS`	CCD linear position sensor measurements in appropriate units.
`CCDPOSn`	CCD linear position sensor measurements in appropriate units.
`CCDPRE`	CCD pressure sensor measurements in appropriate units.
`CCDPREn`	CCD pressure sensor measurements in appropriate units.
`CCDPSIZE`	The actual format size of the CCD.
`CCDRA`	Right ascension of the CCD center.
`CCDRADEC`	CCD coordinate system type.
`CCDRAU`	Right ascension unit.
`CCDSEC`	The unbinned section of the logical CCD pixel raster covered by the amplifier readout in section notation.
`CCDSIZE`	The logical unbinned size of the CCD in section notation.
`CCDSUM`	CCD on-chip summing given as two or four integer numbers.
`CCDSWV`	CCD software version
`CCDTEM`	CCD temperature sensor measurements in degrees Celsius.
`CCDTEMn`	CCD temperature sensor measurements in degrees Celsius.
`CCDVOL`	CCD voltage sensor measurements in volts.
`CCDVOLn`	CCD voltage sensor measurements in volts.
`CD1_1`	Spectrum coordinate matrix.
`CD1_2`	Spectrum coordinate matrix.
`CD11nnn`	Spectrum coordinate matrix.
`CD12nnn`	Spectrum coordinate matrix.
`CD2_1`	Spectrum coordinate matrix.
`CD2_2`	Spectrum coordinate matrix.
`CD21nnn`	Spectrum coordinate matrix.
`CD22nnn`	Spectrum coordinate matrix.
`CHPANGLE`	Coordinate scale matrix for image world coordinates.
`CHPDIST`	default value = none
`CHPFREQ`	default value = none
`CHPHWV`	default value = none
`CHPMJD`	Times for the chopping system sensor measurements given as modified Julian dates.
`CHPMJDn`	Times for the chopping system sensor measurements given as modified Julian dates.
`CHPNCHOP`	default value = none
`CHPPAN`	Chopping system position angle measurements in appropriate units.
`CHPPANn`	Chopping system position angle measurements in appropriate units.
`CHPPOS`	Chopping system linear position sensor measurements in appropriate units.
`CHPPOSn`	Chopping system linear position sensor measurements in appropriate units.
`CHPPRE`	Chopping system pressure sensor measurements in appropriate units.
`CHPPREn`	Chopping system pressure sensor measurements in appropriate units.
`CHPSTAT`	default value = none
`CHPSWV`	default value = none
`CHPTEM`	Chopping system temperature sensor measurements in degrees Celsius.
`CHPTEMn`	Chopping system temperature sensor measurements in degrees Celsius.
`CHPVOL`	Chopping system voltage sensor measurements in volts.
`CHPVOLn`	Chopping system voltage sensor measurements in volts.
`CMAX1`	Dispersion limit for the region occupied by the spectrum.
`CMAX2`	Cross-dispersion limit for the region occupied by the spectrum.
`CMIN1`	Dispersion limit for the region occupied by the spectrum.
`CMIN2`	Cross-dispersion limit for the region occupied by the spectrum.
`CMMTnnn`	Observer comments.
`CMN1nnn`	Dispersion limit for the region occupied by the spectrum.
`CMN2nnn`	Cross-dispersion limit for the region occupied by the spectrum.
`CMX1nnn`	Dispersion limit for the region occupied by the spectrum.
`CMX2nnn`	Cross-dispersion limit for the region occupied by the spectrum.
`CONHWV`	Controller hardware version.
`CONSTAT`	Controller status.
`CONSWV`	Controller software version.
`CONTROLR`	Detector controller name.
`CORRCT`	Correctors in the optical path.
`CORRCTn`	Correctors in the optical path.
`CORRCTOR`	Correctors in the optical path.
`CROSUNIT`	Default cross dispersion unit.
`CROSVAL`	Default cross dispersion coordinate value.
`CRP1nnn`	Reference spectrum pixel coordinate.
`CRP2nnn`	Reference spectrum pixel coordinate.
`CRPIX1`	Reference spectrum pixel coordinate.
`CRPIX2`	Reference spectrum pixel coordinate.
`CRV1nnn`	Spectrum reference dispersion coordinate corresponding to the spectrum reference pixel coordinate.
`CRV2nnn`	Spectrum reference dispersion coordinate corresponding to the spectrum reference pixel coordinate.
`CRVAL1`	Spectrum reference dispersion coordinate corresponding to the spectrum reference pixel coordinate.
`CRVAL2`	Reference right ascension coordinate corresponding to the image reference pixel coordinate.
`CTY1nnn`	Reference declination coordinate corresponding to the image reference pixel coordinate.
`CTY2nnn`	Coordinate type for image world coordinates.
`CTYP2nnn`	Coordinate type for image world coordinates.
`CTYPE1`	Spectrum dispersion coordinate type.
`CTYPE2`	Coordinate type for image world coordinates.
`CUN1nnn`	Coordinate type for image world coordinates.
`CUN2nnn`	Coordinate reference unit for direct imaging world coordinates.
`CUNIT1`	Coordinate reference unit for direct imaging world coordinates.
`CUNIT2`	Coordinate reference unit for direct imaging world coordinates.
`DARKTIME`	Total dark time of the observation.
`DATASEC`	Mapping of the CCD section to image coordinates.
`DATEEND`	Date at the end of the exposure.
`DATEHDR`	Date header creation.
`DATEOBS`	Default date for the observation.
`DECPANGL`	Projected position angle of the positive declination axis on the detector.
`DECUNIT`	Default declination units.
`DETCONF`	Detector configuration.
`DETDEC`	Declination of the detector center.
`DETDECU`	Declination unit.
`DETECTOR`	Detector name.
`DETEPOCH`	Epoch of the detector center coordinates.
`DETEQUIN`	Detector coordinate system equinox.
`DETHWV`	Detector hardware version.
`DETMJD`	Times for the detector sensor measurements given as modified Julian dates.
`DETMJDn`	Times for the detector sensor measurements given as modified Julian dates.
`DETPAN`	Detector position angle measurements in appropriate units.
`DETPANn`	Detector position angle measurements in appropriate units.
`DETPOS`	Detector linear position sensor measurements in appropriate units.
`DETPOSn`	Detector linear position sensor measurements in appropriate units.
`DETPRE`	Detector pressure sensor measurements in appropriate units.
`DETPREn`	Detector pressure sensor measurements in appropriate units.
`DETRA`	Right ascension of the detector center.
`DETRADEC`	Detector coordinate system type.
`DETRAU`	Right ascension unit.
`DETSEC`	Mapping of the CCD section to detector coordinates.
`DETSIZE`	The logical unbinned size of the detector in section notation.
`DETSTAT`	Detector status.
`DETSWV`	Detector software version.
`DETTEM`	Detector temperature sensor measurements in degrees Celsius.
`DETTEMn`	Detector temperature sensor measurements in degrees Celsius.
`DETVOL`	Detector voltage sensor measurements in volts.
`DETVOLn`	Detector voltage sensor measurements in volts.
`DEWAR`	Dewar identification.
`DEWHWV`	Dewar hardware version.
`DEWMJD`	Times for the dewar sensor measurements given as modified Julian dates.
`DEWMJDn`	Times for the dewar sensor measurements given as modified Julian dates.
`DEWPAN`	Dewar position angle measurements in appropriate units.
`DEWPANn`	Dewar position angle measurements in appropriate units.
`DEWPOS`	Dewar linear position sensor measurements in appropriate units.
`DEWPOSn`	Dewar linear position sensor measurements in appropriate units.
`DEWPRE`	Dewar pressure sensor measurements in appropriate units.
`DEWPREn`	Dewar pressure sensor measurements in appropriate units.
`DEWSTAT`	Dewar status.
`DEWSWV`	Dewar software version.
`DEWTEM`	Dewar temperature sensor measurements in degrees Celsius.
`DEWTEMn`	Dewar temperature sensor measurements in degrees Celsius.
`DEWVOL`	Dewar voltage sensor measurements in volts.
`DEWVOLn`	Dewar voltage sensor measurements in volts.
`DISMJD`	Times for the disperser sensor measurements given as modified Julian dates.
`DISMJDn`	Times for the disperser sensor measurements given as modified Julian dates.
`DISPAN`	Disperser position angle measurements in appropriate units.
`DISPANn`	Disperser position angle measurements in appropriate units.
`DISPAXIS`	The detector axis along which the dispersion is most closely aligned.
`DISPDW`	Approximate central dispersion/pixel on the detector.
`DISPER`	Disperser identification names.
`DISPERn`	Disperser identification names.
`DISPOS`	Disperser linear position sensor measurements in appropriate units.
`DISPOSn`	Disperser linear position sensor measurements in appropriate units.
`DISPRE`	Disperser pressure sensor measurements in appropriate units.
`DISPREn`	Disperser pressure sensor measurements in appropriate units.
`DISPUNIT`	Default dispersion coordinate unit.
`DISPVAL`	Default dispersion coordinate value.
`DISPWC`	Approximate central dispersion coordinate on the detector.
`DISTEM`	Disperser temperature sensor measurements in degrees Celsius.
`DISTEMn`	Disperser temperature sensor measurements in degrees Celsius.
`DISVOL`	Disperser voltage sensor measurements in volts.
`DISVOLn`	Disperser voltage sensor measurements in volts.
`DMEDIR`	Average wind direction measurements measured east of north over the sampling period inside the dome.
`DMEDIRn`	Average wind direction measurements measured east of north over the sampling period inside the dome.
`DMEGUS`	Maximum wind speed over the sampling period inside the dome.
`DMEGUSn`	Maximum wind speed over the sampling period inside the dome.
`DMEMJD`	Times for the dome environment measurements given as modified Julian.
`DMEMJDn`	Times for the dome environment measurements given as modified Julian.
`DMEPER`	Wind sampling period for the wind measurements inside the dome.
`DMEPERn`	Wind sampling period for the wind measurements inside the dome.
`DMETEM`	Temperatures Celsius inside the dome.
`DMETEMn`	Temperatures Celsius inside the dome.
`DMEWIN`	Average wind speeds over the sampling period inside the dome.
`DMEWINn`	Average wind speeds over the sampling period inside the dome.
`DOMMJD`	Times for the dome sensor measurements given as modified Julian dates.
`DOMMJDn`	Times for the dome sensor measurements given as modified Julian dates.
`DOMPAN`	Dome position angle sensor measurements.
`DOMPANn`	Dome position angle sensor measurements.
`DOMPOS`	Dome linear position sensor measurements in appropriate units.
`DOMPOSn`	Dome linear position sensor measurements in appropriate units.
`DOMPRE`	Dome pressure sensor measurements in appropriate units.
`DOMPREn`	Dome pressure sensor measurements in appropriate units.
`DOMSTAT`	Dome status.
`DOMTEM`	Dome temperature sensor measurements in degrees Celsius.
`DOMTEMn`	Dome temperature sensor measurements in degrees Celsius.
`DOMVOL`	Dome voltage sensor measurements in volts.
`DOMVOLn`	Dome voltage sensor measurements in volts.
`DTMn_n`	Transformation matrix between CCD and detector coordinates.
`DTVn`	Transformation origin vector between CCD and detector coordinates.
`ENVDIR`	Average wind direction measurements measured east of north over the sampling period outside the dome at times given by ENVMJDn keywords.
`ENVDIRn`	Average wind direction measurements measured east of north over the sampling period outside the dome at times given by ENVMJDn keywords.
`ENVGUS`	Maximum wind speed in km/s over the sampling period outside the dome at times given by ENVMJDn keywords.
`ENVGUSn`	Maximum wind speed in km/s over the sampling period outside the dome at times given by ENVMJDn keywords.
`ENVHUM`	Relative humidity measurements at times given by ENVMJDn keywords.
`ENVHUMn`	Relative humidity measurements at times given by ENVMJDn keywords.
`ENVMJD`	Times for the site environment measurements given as modified Julian.
`ENVMJDn`	Times for the site environment measurements given as modified Julian.
`ENVPER`	Wind sampling period for the wind measurements outside the dome at times given by ENVMJDn keywords.
`ENVPERn`	Wind sampling period for the wind measurements outside the dome at times given by ENVMJDn keywords.
`ENVPRE`	Atmospheric pressure measurements at times given by ENVMJDn keywords.
`ENVPREn`	Atmospheric pressure measurements at times given by ENVMJDn keywords.
`ENVTEM`	Temperatures outside the dome at times given by ENVMJDn keywords.
`ENVTEMn`	Temperatures outside the dome at times given by ENVMJDn keywords.
`ENVWAT`	Precipitable water vapor measurements at times given by ENVMJDn keywords.
`ENVWATn`	Precipitable water vapor measurements at times given by ENVMJDn keywords.
`ENVWIN`	Average wind speeds over the sampling period outside the dome at times given by ENVMJDn keywords.
`ENVWINn`	Average wind speeds over the sampling period outside the dome at times given by ENVMJDn keywords.
`ERRORnnn`	Error information.
`EXPREQ`	Requested exposure time of the observation.
`FIBER`	Fiber identification for the fiber(s).
`FIBnnn`	Fiber identification for the fiber(s).
`FILPOS`	Filter position given as filter wheel number or other filter system position measurement.
`FILPOSn`	Filter position given as filter wheel number or other filter system position measurement.
`FILTYP`	Filter type.
`FILTYPn`	Filter type.
`FOCNEXPO`	Number of focus exposures in a focus sequence.
`FOCSHIFT`	Pixel shift on the detector between exposures in a focus sequence.
`FOCSTART`	Starting focus value in focus sequence.
`FOCSTEP`	Focus increment step in focus sequence.
`GAIN`	Amplifier gain in electrons per analog unit.
`GTV`	Guider TV name.
`GTVFIL`	Guider TV filter names.
`GTVFILn`	Guider TV filter names.
`GTVFPO`	Guider TV filter position given as filter wheel number or other filter system position measurement.
`GTVFPOn`	Guider TV filter position given as filter wheel number or other filter system position measurement.
`GTVFTY`	Guider TV filter type.
`GTVFTYn`	Guider TV filter type.
`GTVHWV`	Guider TV identification and hardware version.
`GTVMJD`	Times for the guider television sensor measurements given as modified Julian dates.
`GTVMJDn`	Times for the guider television sensor measurements given as modified Julian dates.
`GTVPAN`	Guider television position angle measurements in appropriate units.
`GTVPANn`	Guider television position angle measurements in appropriate units.
`GTVPOS`	Guider television linear position sensor measurements in appropriate units.
`GTVPOSn`	Guider television linear position sensor measurements in appropriate units.
`GTVPRE`	Guider television pressure sensor measurements in appropriate units.
`GTVPREn`	Guider television pressure sensor measurements in appropriate units.
`GTVSTAT`	Guider TV status.
`GTVSWV`	Guider TV software version.
`GTVTEM`	Guider television temperature sensor measurements in degrees Celsius.
`GTVTEMn`	Guider television temperature sensor measurements in degrees Celsius.
`GTVVOL`	Guider television voltage sensor measurements in volts.
`GTVVOLn`	Guider television voltage sensor measurements in volts.
`GUIDEC`	Guide object declination.
`GUIDECU`	Declination unit.
`GUIDEHWV`	Guider identification and hardware version.
`GUIDER`	Guider name.
`GUIDESWV`	Guider software version.
`GUIEPOCH`	Epoch of the guide object coordinates.
`GUIEQUIN`	Guide object coordinate system equinox.
`GUIMJD`	Times for the guider sensor measurements given as modified Julian dates.
`GUIMJDn`	Times for the guider sensor measurements given as modified Julian dates.
`GUIPAN`	Guider position angle measurements in appropriate units.
`GUIPANn`	Guider position angle measurements in appropriate units.
`GUIPOS`	Guider linear position sensor measurements in appropriate units.
`GUIPOSn`	Guider linear position sensor measurements in appropriate units.
`GUIPRE`	Guider pressure sensor measurements in appropriate units.
`GUIPREn`	Guider pressure sensor measurements in appropriate units.
`GUIRA`	Guide object right ascension.
`GUIRADEC`	Guide object coordinate system type.
`GUIRATE`	Guider correction rate.
`GUIRAU`	Right ascension unit.
`GUISTAT`	Guider status.
`GUITEM`	Guider temperature sensor measurements in degrees Celsius.
`GUITEMn`	Guider temperature sensor measurements in degrees Celsius.
`GUIVOL`	Guider voltage sensor measurements in volts.
`GUIVOLn`	Guider voltage sensor measurements in volts.
`HA`	Hour angle at TELMJD.
`IMAGEHWV`	Image creation system hardware version.
`IMAGEID`	The image identification when there are multiple images within an observation.
`IMAGESWV`	Image creation system software version.
`INSFOCUS`	Instrument focus.
`INSMJD`	Times for the instrument sensor measurements given as modified Julian dates.
`INSMJDn`	Times for the instrument sensor measurements given as modified Julian dates.
`INSPAN`	Instrument position angle measurements in appropriate units.
`INSPANn`	Instrument position angle measurements in appropriate units.
`INSPOS`	Instrument linear position sensor measurements in appropriate units.
`INSPOSn`	Instrument linear position sensor measurements in appropriate units.
`INSPRE`	Instrument pressure sensor measurements in appropriate units.
`INSPREn`	Instrument pressure sensor measurements in appropriate units.
`INSSTAT`	Instrument status.
`INSTCONF`	Instrument configuration.
`INSTEM`	Instrument temperature sensor measurements in degrees Celsius.
`INSTEMn`	Instrument temperature sensor measurements in degrees Celsius.
`INSTHWV`	Instrument hardware version.
`INSTSWV`	Instrument software version.
`INSVOL`	Instrument voltage sensor measurements in volts.
`INSVOLn`	Instrument voltage sensor measurements in volts.
`KWDICT`	The keyword dictionary defining the keywords.
`LAMP`	Calibration lamp name
`LAMPTYPE`	Calibration lamp type.
`LMPMJD`	Times for the lamp sensor measurements given as modified Julian dates.
`LMPMJDn`	Times for the lamp sensor measurements given as modified Julian dates.
`LMPPAN`	Calibration lamp position angle measurements in appropriate units.
`LMPPANn`	Calibration lamp position angle measurements in appropriate units.
`LMPPOS`	Calibration lamp linear position sensor measurements in appropriate units.
`LMPPOSn`	Calibration lamp linear position sensor measurements in appropriate units.
`LMPPRE`	Calibration lamp pressure sensor measurements in appropriate units.
`LMPPREn`	Calibration lamp pressure sensor measurements in appropriate units.
`LMPTEM`	Calibration lamp temperature sensor measurements in degrees Celsius.
`LMPTEMn`	Calibration lamp temperature sensor measurements in degrees Celsius.
`LMPVOL`	Calibration lamp voltage sensor measurements in volts.
`LMPVOLn`	Calibration lamp voltage sensor measurements in volts.
`LST_OBS`	Local siderial time at the start of the exposure.
`LSTEND`	Local siderial time at the end of the exposure.
`LSTHDR`	Local siderial time of the header creation.
`LSTOBS`	Default local siderial time for the observation.
`LTMn_n`	Transformation matrix between CCD and image coordinates.
`LTVn`	Transformation origin vector between CCD and image coordinates.
`MAXNSCAN`	The maximum number of scanned (unbinned) lines used to form an output line.
`MINNSCAN`	The minimum number of scanned (unbinned) lines used to form an output line.
`MJD_OBS`	Modified Julian date at the start of the exposure.
`MJDHDR`	Modified Julian date when the image header was created by the software.
`MJDOBS`	Default modified Julian date for the observation.
`NAMPS`	The number of amplifiers in the detector.
`NCCDS`	The number of CCDs in the detector.
`NODANGLE`	default value = none
`NODDIST`	default value = none
`NODFREQ`	default value = none
`NODHWV`	default value = none
`NODMJD`	Times for the nodding system sensor measurements given as modified Julian dates.
`NODMJDn`	Times for the nodding system sensor measurements given as modified Julian dates.
`NODNCHOP`	default value = none
`NODPAN`	Nodding position angle measurements in appropriate units.
`NODPANn`	Nodding position angle measurements in appropriate units.
`NODPOS`	Nodding system linear position sensor measurements in appropriate units.
`NODPOSn`	Nodding system linear position sensor measurements in appropriate units.
`NODPRE`	Nodding system pressure sensor measurements in appropriate units.
`NODPREn`	Nodding system pressure sensor measurements in appropriate units.
`NODSTAT`	default value = none
`NODSWV`	default value = none
`NODTEM`	Nodding system temperature sensor measurements in degrees Celsius.
`NODTEMn`	Nodding system temperature sensor measurements in degrees Celsius.
`NODVOL`	Nodding system voltage sensor measurements in volts.
`NODVOLn`	Nodding system voltage sensor measurements in volts.
`NSUBEXPS`	Number of coadded subexposures.
`OBJDEC`	Declination of the target astronomical object(s).
`OBJDECU`	Declination unit.
`OBJEPOCH`	Epoch of the target astronomical object coordinate(s).
`OBJEQUIN`	Coordinate system equinox for the target astronomical object(s).
`OBJnnn`	Standard reference or catalog name for the target astronomical object(s).
`OBJRA`	Right ascension of the target astronomical object(s).
`OBJRADEC`	Coordinate system type for the target astronomical object(s).
`OBJRAU`	Right ascension unit.
`OBJTnnn`	Type of target astronomical object(s).
`OBJTYPE`	Type of target astronomical object(s).
`OBSDEC`	Declination of the observation.
`OBSDECU`	Declination unit.
`OBSEPOCH`	Epoch of the coordinates used in observation coordinates.
`OBSEQUIN`	Equinox of coordinates used in observation coordinates.
`OBSERVAT`	Observatory identification for the site of the observation.
`OBSID`	The unique observatory observation identification.
`OBSRA`	Right ascension of the observation.
`OBSRADEC`	Coordinate system used in observation coordinates.
`OBSRAU`	Right ascension unit.
`OBSRVRnn`	Name(s) of the observers.
`OBSSTAT`	Status of the observation.
`OBSTYPE`	The type of observation such as an astronomical exposure or a particular type of calibration exposure.
`ODECnnn`	Declination of the target astronomical object(s).
`ODEUnnn`	Declination unit.
`OEPOnnn`	Epoch of the target astronomical object coordinate(s).
`OEQUnnn`	Coordinate system equinox for the target astronomical object(s).
`ORAnnn`	Right ascension of the target astronomical object(s).
`ORAUnnn`	Right ascension unit.
`ORDSnnn`	Coordinate system type for the target astronomical object(s).
`PHOTCAL`	Status of calibration to data proportional to photons.
`PHOTOMET`	Photometric conditions during the observation.
`PIPEHW`	Processing hardware used.
`PIPEHWn`	Processing hardware used.
`PIPELINE`	Name of processing pipeline applied.
`PIPESW`	Processing software version.
`PIPESWn`	Processing software version.
`PIXSCALn`	Projected pixel scale along axis n.
`PIXSIZEn`	Unbinned pixel size along each dimension given in appropriate units.
`PMAX1`	Pixel limit for region occupied by the spectrum.
`PMAX2`	Pixel limit for region occupied by the spectrum.
`PMIN1`	Pixel limit for region occupied by the spectrum.
`PMIN2`	Pixel limit for region occupied by the spectrum.
`PMN1nnn`	Pixel limit for region occupied by the spectrum.
`PMN2n`	Pixel limit for region occupied by the spectrum.
`PMX1n`	Pixel limit for region occupied by the spectrum.
`PMX2n`	Pixel limit for region occupied by the spectrum.
`PREFLASH`	CCD preflash time.
`PROCnnn`	Processing log information formatted as FITS comments.
`PROCSTAT`	Processing status.
`PROPID`	The unique observatory proposal identification.
`PROPOSAL`	The name or title of the proposal.
`PROPOSER`	Name(s) of the proposers.
`PROPSRnn`	Name(s) of the proposers.
`RADECEQ`	Default coordinate system equinox.
`RAPANGL`	Projected position angle of the positive right ascension axis on the detector.
`RAUNIT`	Default right ascension units.
`RDNOISE`	CCD readout noise in rms electrons.
`READTIME`	Amplifier unbinned pixel read time.
`RECNO`	Archive identification.
`SEEING`	Seeing estimates specified as the stellar full-width at half-maximum in arc seconds.
`SEEINGn`	Seeing estimates specified as the stellar full-width at half-maximum in arc seconds.
`SEEMJD`	Times for the seeing estimates given as modified Julian dates.
`SEEMJDn`	Times for the seeing estimates given as modified Julian dates.
`SEXP`	Exposure time of the nth subexposure.
`SEXPnnn`	Exposure time of the nth subexposure.
`SHUTCLOS`	Time for the shutter to close fully.
`SHUTHWV`	Shutter identification and hardware version.
`SHUTOPEN`	Time for the shutter to open fully.
`SHUTSTAT`	Shutter status.
`SHUTSWV`	Shutter software version.
`SLIT`	Slit or mask hole identification for the aperture(s).
`SLITnnn`	Slit or mask hole identification for the aperture(s).
`SPECFWHM`	FWHM of the object spectrum profile on the detector.
`SUT`	UTC of the start of each subexposure.
`SUTn`	UTC of the start of each subexposure.
`SWIDnnn`	FWHM of the object spectrum profile on the detector.
`TELAAMJD`	Modified Julian date at the time of the altitude/azimuth keywords.
`TELALT`	Telescope pointing altitude at the time given by TELAAMJD.
`TELAZ`	Telescope pointing azimuth at the time given by TELAAMJD.
`TELCONF`	Telescope configuration.
`TELDEC`	Telescope pointing declination.
`TELDECU`	Declination unit.
`TELEPOCH`	Telescope pointing coordinate epoch.
`TELEQUIN`	Telescope pointing coordinate system equinox.
`TELFOCUS`	Telescope focus value in available units.
`TELMJD`	Time of zenith distance and hour angle
`TELMJDn`	Times for the telescope sensor measurements given as modified Julian dates.
`TELPAN`	Telescope position angle measurements in appropriate units.
`TELPANn`	Telescope position angle measurements in appropriate units.
`TELPOS`	Telescope linear position sensor measurements in appropriate units.
`TELPOSn`	Telescope linear position sensor measurements in appropriate units.
`TELPRE`	Telescope pressure sensor measurements in appropriate units.
`TELPREn`	Telescope pressure sensor measurements in appropriate units.
`TELRA`	Telescope pointing right ascension.
`TELRADEC`	Telescope pointing coordinate system type.
`TELRAU`	Right ascension unit.
`TELSTAT`	Telescope status.
`TELTCS`	Telescope control system software version.
`TELTEM`	Telescope temperature sensor measurements in degrees Celsius.
`TELTEMn`	Telescope temperature sensor measurements in degrees Celsius.
`TELTKDEC`	Declination telescope tracking rate in arc seconds per second.
`TELTKRA`	Right ascension telescope tracking rate from siderial in arc seconds per second.
`TELVER`	Telescope hardware version.
`TELVOL`	Telescope voltage sensor measurements in volts.
`TELVOLn`	Telescope voltage sensor measurements in volts.
`TIMEEND`	Time of exposure end in the TSYSEND system.
`TIMEHDR`	Time of header creation.
`TIMESYS`	Default time system.
`TRIMSEC`	Section of the recorded image to be kept after calibration processing.
`TSYSEND`	Time system for the TIMEEND keyword.
`TSYSHDR`	Time system for the header creation keywords.
`TSYSOBS`	Time system for the TIME-OBS keyword.
`TV`	TV name.
`TVFILTn`	TV filter names.
`TVFOCn`	Television focus value in available units.
`TVFPOSn`	TV filter position given as filter wheel number or other filter system position measurement.
`TVFTYPn`	TV filter type.
`TVHWV`	TV identification and hardware version.
`TVMJDn`	Times for the guider television sensor measurements given as modified Julian dates.
`TVn`	TV name.
`TVnFILTn`	TV filter names.
`TVnFOCn`	Television focus value in available units.
`TVnFPOSn`	TV filter position given as filter wheel number or other filter system position measurement.
`TVnFTYPn`	TV filter type.
`TVnHWV`	TV identification and hardware version.
`TVnMJDn`	Times for the guider television sensor measurements given as modified Julian dates.
`TVnPANn`	Television position angle measurements in appropriate units.
`TVnPOSn`	Television linear position sensor measurements in appropriate units.
`TVnPREn`	Television pressure sensor measurements in appropriate units.
`TVnSTAT`	TV status.
`TVnSWV`	TV software version.
`TVnTEMn`	Television temperature sensor measurements in degrees Celsius.
`TVnVOLn`	Television voltage sensor measurements in volts.
`TVPANn`	Television position angle measurements in appropriate units.
`TVPOSn`	Television linear position sensor measurements in appropriate units.
`TVPREn`	Television pressure sensor measurements in appropriate units.
`TVSTAT`	TV status.
`TVSWV`	TV software version.
`TVTEMn`	Television temperature sensor measurements in degrees Celsius.
`TVVOLn`	Television voltage sensor measurements in volts.
`UNITALT`	Altitude unit.
`UNITANG`	Plane angle unit.
`UNITAP`	Focal plane aperture size unit.
`UNITAREA`	Area unit.
`UNITAZ`	Azimuth unit.
`UNITCAP`	Capacitance unit.
`UNITCHAR`	Charge unit.
`UNITCOND`	Conductance unit.
`UNITCUR`	Current unit.
`UNITDEC`	Delination unit.
`UNITENER`	Energy unit.
`UNITEVNT`	Event unit.
`UNITFLUX`	Flux unit.
`UNITFORC`	Force unit.
`UNITFREQ`	Frequency unit.
`UNITHOUR`	Time of day unit.
`UNITILLU`	Illuminance unit.
`UNITINDU`	Inductance unit.
`UNITLAT`	Latitude unit.
`UNITLEN`	Length unit.
`UNITLFLX`	Luminous flux unit.
`UNITLINT`	Luminous intensity unit.
`UNITLONG`	Longitude unit.
`UNITMASS`	Mass unit.
`UNITMDEN`	Magnetic density unit.
`UNITMFLD`	Magnetic field unit.
`UNITMFLX`	Magnetic flux unit.
`UNITPA`	Position angle unit.
`UNITPOW`	Power unit.
`UNITPRES`	Pressure unit.
`UNITRA`	Right ascension unit.
`UNITRATE`	Celestial rate of motion.
`UNITRES`	Resistance unit.
`UNITSANG`	Solid angle unit.
`UNITSEP`	Celestial separation unit.
`UNITTEMP`	Temperature unit.
`UNITTIME`	Time unit.
`UNITVEL`	Velocity unit.
`UNITVOLT`	Voltage unit.
`UTC_OBS`	UTC time at the start of the exposure.
`UTCEND`	UTC at the end of the exposure.
`UTCHDR`	UTC of header creation.
`UTCOBS`	Default UTC time for the observation.
`WAT_nnn`	IRAF WCS attribute strings for all axes.
`WATn_nnn`	IRAF WCS attribute strings.
`WCSAnnn`	Descriptive string identifying the source of the astrometry used to derive the WCS.
`WCSASTRM`	Descriptive string identifying the source of the astrometry used to derive the WCS.
`WCSDIM`	Dimensionality of the WCS physical system.
`WCSEnnn`	Epoch of the coordinates used in the world coordinate system.
`WCSEPOCH`	Equinox when equatorial coordinates are used in the world coordinate system.
`WCSRADEC`	Coordinate system type when equatorial coordinates are used in the world coordinate system.
`WCSRnnn`	Coordinate system type when equatorial coordinates are used in the world coordinate system.
`WEATHER`	Weather condition description.
`ZD`	Zenith distance of telescope pointing at TELMJD.

Field Summary

Fields
Modifier and Type Field Description

private IFitsHeader key

Constructor Summary

Constructors
Modifier	Constructor	Description
`private`	`NOAOExt(java.lang.String key, IFitsHeader.HDU hdu, IFitsHeader.VALUE valueType, java.lang.String comment)`
`private`	`NOAOExt(IFitsHeader.HDU hdu, IFitsHeader.VALUE valueType, java.lang.String comment)`

Method Summary

All Methods Static Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`java.lang.String`	`comment()`
`IFitsHeader.HDU`	`hdu()`
`java.lang.String`	`key()`
`IFitsHeader`	`n(int... number)`
`IFitsHeader.SOURCE`	`status()`
`static NOAOExt`	`valueOf(java.lang.String name)`	Returns the enum constant of this type with the specified name.
`static NOAOExt[]`	`values()`	Returns an array containing the constants of this enum type, in the order they are declared.
`IFitsHeader.VALUE`	`valueType()`

Methods inherited from class java.lang.Enum
clone, compareTo, equals, finalize, getDeclaringClass, hashCode, name, ordinal, toString, valueOf

Methods inherited from class java.lang.Object
getClass, notify, notifyAll, wait, wait, wait

- Enum Constant Detail
  - ACTFREQ
```
public static final NOAOExt ACTFREQ
```
    default value = none
    
    index = none
  - ACTHWV
```
public static final NOAOExt ACTHWV
```
    default value = none
    
    index = none
  - ACTMJD
```
public static final NOAOExt ACTMJD
```
    Times for the active optics sensor measurements given as modified Julian dates.
    units = 'd'
    
    default value = MJDHDR ACTMJD
    
    index = none 1-999
  - ACTMJDn
```
public static final NOAOExt ACTMJDn
```
    Times for the active optics sensor measurements given as modified Julian dates.
    units = 'd'
    
    default value = MJDHDR ACTMJD
    
    index = none 1-999
  - ACTPAN
```
public static final NOAOExt ACTPAN
```
    Active optics system position angle measurements in appropriate units.
    default value = none none
    
    index = none 1-999
  - ACTPANn
```
public static final NOAOExt ACTPANn
```
    Active optics system position angle measurements in appropriate units.
    default value = none none
    
    index = none 1-999
  - ACTPOS
```
public static final NOAOExt ACTPOS
```
    Active optics system linear position sensor measurements in appropriate units.
    default value = none none
    
    index = none 1-999
  - ACTPOSn
```
public static final NOAOExt ACTPOSn
```
    Active optics system linear position sensor measurements in appropriate units.
    default value = none none
    
    index = none 1-999
  - ACTPRE
```
public static final NOAOExt ACTPRE
```
    Active optics system pressure sensor measurements in appropriate units.
    units = UNITPRES
    
    default value = none none
    
    index = none 1-999
  - ACTPREn
```
public static final NOAOExt ACTPREn
```
    Active optics system pressure sensor measurements in appropriate units.
    units = UNITPRES
    
    default value = none none
    
    index = none 1-999
  - ACTSTAT
```
public static final NOAOExt ACTSTAT
```
    default value = none
    
    index = none
  - ACTSWV
```
public static final NOAOExt ACTSWV
```
    default value = none
    
    index = none
  - ACTTEM
```
public static final NOAOExt ACTTEM
```
    Active optics system temperature sensor measurements in degrees Celsius.
    units = UNITTEMP
    
    default value = none none
    
    index = none 1-999
  - ACTTEMn
```
public static final NOAOExt ACTTEMn
```
    Active optics system temperature sensor measurements in degrees Celsius.
    units = UNITTEMP
    
    default value = none none
    
    index = none 1-999
  - ACTVOL
```
public static final NOAOExt ACTVOL
```
    Active optics voltage sensor measurements in volts.
    units = UNITVOLT
    
    default value = none none
    
    index = none 1-999
  - ACTVOLn
```
public static final NOAOExt ACTVOLn
```
    Active optics voltage sensor measurements in volts.
    units = UNITVOLT
    
    default value = none none
    
    index = none 1-999
  - ADAMJD
```
public static final NOAOExt ADAMJD
```
    Times for the adapter sensor measurements given as modified Julian dates.
    units = 'd'
    
    default value = MJDHDR ADAMJD
    
    index = none 1-999
  - ADAMJDn
```
public static final NOAOExt ADAMJDn
```
    Times for the adapter sensor measurements given as modified Julian dates.
    units = 'd'
    
    default value = MJDHDR ADAMJD
    
    index = none 1-999
  - ADAPAN
```
public static final NOAOExt ADAPAN
```
    Adapter position angle measurements in appropriate units.
    default value = none none
    
    index = none 1-999
  - ADAPANn
```
public static final NOAOExt ADAPANn
```
    Adapter position angle measurements in appropriate units.
    default value = none none
    
    index = none 1-999
  - ADAPOS
```
public static final NOAOExt ADAPOS
```
    Adapter linear position sensor measurements in appropriate units.
    default value = none none
    
    index = none 1-999
  - ADAPOSn
```
public static final NOAOExt ADAPOSn
```
    Adapter linear position sensor measurements in appropriate units.
    default value = none none
    
    index = none 1-999
  - ADAPRE
```
public static final NOAOExt ADAPRE
```
    Adapter pressure sensor measurements in appropriate units.
    units = UNITPRES
    
    default value = none none
    
    index = none 1-999
  - ADAPREn
```
public static final NOAOExt ADAPREn
```
    Adapter pressure sensor measurements in appropriate units.
    units = UNITPRES
    
    default value = none none
    
    index = none 1-999
  - ADAPSWV
```
public static final NOAOExt ADAPSWV
```
    default value = none
    
    index = none
  - ADAPTER
```
public static final NOAOExt ADAPTER
```
    default value = none
    
    index = none
  - ADASTAT
```
public static final NOAOExt ADASTAT
```
    default value = none
    
    index = none
  - ADATEM
```
public static final NOAOExt ADATEM
```
    Adapter temperature sensor measurements in degrees Celsius.
    units = UNITTEMP
    
    default value = none none
    
    index = none 1-999
  - ADATEMn
```
public static final NOAOExt ADATEMn
```
    Adapter temperature sensor measurements in degrees Celsius.
    units = UNITTEMP
    
    default value = none none
    
    index = none 1-999
  - ADAVOL
```
public static final NOAOExt ADAVOL
```
    Adapter voltage sensor measurements in volts.
    units = UNITVOLT
    
    default value = none none
    
    index = none 1-999
  - ADAVOLn
```
public static final NOAOExt ADAVOLn
```
    Adapter voltage sensor measurements in volts.
    units = UNITVOLT
    
    default value = none none
    
    index = none 1-999
  - ADC
```
public static final NOAOExt ADC
```
    Atmospheric dispersion compensator hardware identification.
    default value = none
    
    index = none
  - ADCMJD
```
public static final NOAOExt ADCMJD
```
    Times for the ADC sensor measurements given as modified Julian dates.
    units = 'd'
    
    default value = MJDHDR ADCMJD
    
    index = none 1-999
  - ADCMJDn
```
public static final NOAOExt ADCMJDn
```
    Times for the ADC sensor measurements given as modified Julian dates.
    units = 'd'
    
    default value = MJDHDR ADCMJD
    
    index = none 1-999
  - ADCPAN
```
public static final NOAOExt ADCPAN
```
    ADC position angle measurements in appropriate units.
    default value = none none
    
    index = none 1-999
  - ADCPANn
```
public static final NOAOExt ADCPANn
```
    ADC position angle measurements in appropriate units.
    default value = none none
    
    index = none 1-999
  - ADCPOS
```
public static final NOAOExt ADCPOS
```
    ADC linear position sensor measurements in appropriate units.
    default value = none none
    
    index = none 1-999
  - ADCPOSn
```
public static final NOAOExt ADCPOSn
```
    ADC linear position sensor measurements in appropriate units.
    default value = none none
    
    index = none 1-999
  - ADCPRE
```
public static final NOAOExt ADCPRE
```
    ADC pressure sensor measurements in appropriate units.
    units = UNITPRES
    
    default value = none none
    
    index = none 1-999
  - ADCPREn
```
public static final NOAOExt ADCPREn
```
    ADC pressure sensor measurements in appropriate units.
    units = UNITPRES
    
    default value = none none
    
    index = none 1-999
  - ADCSTAT
```
public static final NOAOExt ADCSTAT
```
    ADC status.
    units = 'dictionary'
    
    default value = none
    
    index = none
  - ADCSWV
```
public static final NOAOExt ADCSWV
```
    Atmospheric dispersion compensator software identification.
    default value = none
    
    index = none
  - ADCTEM
```
public static final NOAOExt ADCTEM
```
    ADC temperature sensor measurements in degrees Celsius.
    units = UNITTEMP
    
    default value = none none
    
    index = none 1-999
  - ADCTEMn
```
public static final NOAOExt ADCTEMn
```
    ADC temperature sensor measurements in degrees Celsius.
    units = UNITTEMP
    
    default value = none none
    
    index = none 1-999
  - ADCVOL
```
public static final NOAOExt ADCVOL
```
    ADC voltage sensor measurements in volts.
    units = UNITVOLT
    
    default value = none none
    
    index = none 1-999
  - ADCVOLn
```
public static final NOAOExt ADCVOLn
```
    ADC voltage sensor measurements in volts.
    units = UNITVOLT
    
    default value = none none
    
    index = none 1-999
  - ADECnnn
```
public static final NOAOExt ADECnnn
```
    Declination of the aperture(s).
    units = APDECU ADEU%4d
    
    default value = OBJDEC ODEC%4d
    
    index = none 1-9999
  - ADEUnnn
```
public static final NOAOExt ADEUnnn
```
    Declination unit.
    default value = OBJDECU APDECU
    
    index = none 1-9999
  - ADODEC
```
public static final NOAOExt ADODEC
```
    Object declination for wavefront sensing.
    units = ADODECU
    
    default value = none
    
    index = none
  - ADODECU
```
public static final NOAOExt ADODECU
```
    Declination unit.
    default value = none
    
    index = none
  - ADOEPOCH
```
public static final NOAOExt ADOEPOCH
```
    Object coordinate epoch for wavefront sensing.
    default value = TELEPOCH
    
    index = none
  - ADOEQUIN
```
public static final NOAOExt ADOEQUIN
```
    Object coordinate system equinox for wavefront sensing. A value before 1984 is Besselian otherwise it is Julian.
    default value = TELEQUIN
    
    index = none
  - ADOFREQ
```
public static final NOAOExt ADOFREQ
```
    default value = none
    
    index = none
  - ADOHWV
```
public static final NOAOExt ADOHWV
```
    default value = none
    
    index = none
  - ADOMJD
```
public static final NOAOExt ADOMJD
```
    Times for the adaptive optics sensor measurements given as modified Julian dates.
    units = 'd'
    
    default value = MJDHDR ADOMJD
    
    index = none 1-999
  - ADOMJDn
```
public static final NOAOExt ADOMJDn
```
    Times for the adaptive optics sensor measurements given as modified Julian dates.
    units = 'd'
    
    default value = MJDHDR ADOMJD
    
    index = none 1-999
  - ADOPAN
```
public static final NOAOExt ADOPAN
```
    Adaptive optics system position angle measurements in appropriate units.
    default value = none none
    
    index = none 1-999
  - ADOPANn
```
public static final NOAOExt ADOPANn
```
    Adaptive optics system position angle measurements in appropriate units.
    default value = none none
    
    index = none 1-999
  - ADOPOS
```
public static final NOAOExt ADOPOS
```
    Adaptive optics system linear position sensor measurements in appropriate units.
    default value = none none
    
    index = none 1-999
  - ADOPOSn
```
public static final NOAOExt ADOPOSn
```
    Adaptive optics system linear position sensor measurements in appropriate units.
    default value = none none
    
    index = none 1-999
  - ADOPRE
```
public static final NOAOExt ADOPRE
```
    Adaptive optics system pressure sensor measurements in appropriate units.
    units = UNITPRES
    
    default value = none none
    
    index = none 1-999
  - ADOPREn
```
public static final NOAOExt ADOPREn
```
    Adaptive optics system pressure sensor measurements in appropriate units.
    units = UNITPRES
    
    default value = none none
    
    index = none 1-999
  - ADORA
```
public static final NOAOExt ADORA
```
    Object right ascension for wavefront sensing.
    units = ADORAU
    
    default value = none
    
    index = none
  - ADORADEC
```
public static final NOAOExt ADORADEC
```
    Object coordinate system type for wavefront sensing.
    default value = TELRADEC
    
    index = none
  - ADORAU
```
public static final NOAOExt ADORAU
```
    Right ascension unit.
    default value = none
    
    index = none
  - ADOSTAT
```
public static final NOAOExt ADOSTAT
```
    default value = none
    
    index = none
  - ADOSWV
```
public static final NOAOExt ADOSWV
```
    default value = none
    
    index = none
  - ADOTEM
```
public static final NOAOExt ADOTEM
```
    Adaptive optics system temperature sensor measurements in degrees Celsius.
    units = UNITTEMP
    
    default value = none none
    
    index = none 1-999
  - ADOTEMn
```
public static final NOAOExt ADOTEMn
```
    Adaptive optics system temperature sensor measurements in degrees Celsius.
    units = UNITTEMP
    
    default value = none none
    
    index = none 1-999
  - ADOTYPE
```
public static final NOAOExt ADOTYPE
```
    Type of object used for wavefront sensing.
    default value = none
    
    index = none
  - ADOVOL
```
public static final NOAOExt ADOVOL
```
    Adaptive optics system voltage sensor measurements in volts.
    units = UNITVOLT
    
    default value = none none
    
    index = none 1-999
  - ADOVOLn
```
public static final NOAOExt ADOVOLn
```
    Adaptive optics system voltage sensor measurements in volts.
    units = UNITVOLT
    
    default value = none none
    
    index = none 1-999
  - AEPOnnn
```
public static final NOAOExt AEPOnnn
```
    Epoch of the coordinates for the aperture(s).
    units = 'yr'
    
    default value = OBJEPOCH OEPO%4d
    
    index = none 1-9999
  - AEQUnnn
```
public static final NOAOExt AEQUnnn
```
    Coordinate system equinox for the aperture(s). A value before 1984 is Besselian otherwise it is Julian.
    units = 'yr'
    
    default value = OBJEQUIN OEQU%4d
    
    index = none 1-9999
  - AIRMASSn
```
public static final NOAOExt AIRMASSn
```
    The computed airmass(es) at the time(s) given by the AMMJDn keywords.
    default value = none none
    
    index = none 1-9
  - AMMJD
```
public static final NOAOExt AMMJD
```
    Times for the airmass calculation given as modified Julian dates. The MJDHDR keyword may be used for the time at which the image header is created or the MJD-OBS keyword may be used for the time of observation.
    units = 'd'
    
    default value = MJDHDR AMMJD
    
    index = none 1-9
  - AMMJDn
```
public static final NOAOExt AMMJDn
```
    Times for the airmass calculation given as modified Julian dates. The MJDHDR keyword may be used for the time at which the image header is created or the MJD-OBS keyword may be used for the time of observation.
    units = 'd'
    
    default value = MJDHDR AMMJD
    
    index = none 1-9
  - AMPINTEG
```
public static final NOAOExt AMPINTEG
```
    Amplifier integration or sample time.
    units = 'ns'
    
    default value = none
    
    index = none
  - AMPMJD
```
public static final NOAOExt AMPMJD
```
    Times for the amplifier sensor measurements given as modified Julian dates. The MJDHDR keyword may be used for the time at which the image header is created or the MJD-OBS keyword may be used for the time of observation.
    units = 'd'
    
    default value = MJD-OBS AMPMJD
    
    index = none 1-999
  - AMPMJDn
```
public static final NOAOExt AMPMJDn
```
    Times for the amplifier sensor measurements given as modified Julian dates. The MJDHDR keyword may be used for the time at which the image header is created or the MJD-OBS keyword may be used for the time of observation.
    units = 'd'
    
    default value = MJD-OBS AMPMJD
    
    index = none 1-999
  - AMPNAME
```
public static final NOAOExt AMPNAME
```
    Amplifier name.
    default value = none
    
    index = none
  - AMPPAN
```
public static final NOAOExt AMPPAN
```
    CCD amplifier position angle measurements in appropriate units.
    default value = none none
    
    index = none 1-999
  - AMPPANn
```
public static final NOAOExt AMPPANn
```
    CCD amplifier position angle measurements in appropriate units.
    default value = none none
    
    index = none 1-999
  - AMPPOS
```
public static final NOAOExt AMPPOS
```
    CCD amplifier linear position sensor measurements in appropriate units.
    default value = none none
    
    index = none 1-999
  - AMPPOSn
```
public static final NOAOExt AMPPOSn
```
    CCD amplifier linear position sensor measurements in appropriate units.
    default value = none none
    
    index = none 1-999
  - AMPPRE
```
public static final NOAOExt AMPPRE
```
    CCD amplifier pressure sensor measurements in appropriate units.
    units = UNITPRES
    
    default value = none none
    
    index = none 1-999
  - AMPPREn
```
public static final NOAOExt AMPPREn
```
    CCD amplifier pressure sensor measurements in appropriate units.
    units = UNITPRES
    
    default value = none none
    
    index = none 1-999
  - AMPREAD
```
public static final NOAOExt AMPREAD
```
    Amplifier unbinned pixel read time.
    units = 'ns'
    
    default value = none none
    
    index = none none
  - AMPSAMPL
```
public static final NOAOExt AMPSAMPL
```
    CCD amplifier sampling method used. This may also include any integration times.
    default value = none
    
    index = none
  - AMPSEC
```
public static final NOAOExt AMPSEC
```
    Mapping of the CCD section to amplifier coordinates.
    default value = none
    
    index = none
  - AMPSIZE
```
public static final NOAOExt AMPSIZE
```
    The logical unbinned size of the amplifier readout in section notation. This includes drift scanning if applicable.
    default value = none
    
    index = none
  - AMPTEM
```
public static final NOAOExt AMPTEM
```
    CCD amplifier temperature sensor measurements in degrees Celsius.
    units = UNITTEMP
    
    default value = none none
    
    index = none 1-999
  - AMPTEMn
```
public static final NOAOExt AMPTEMn
```
    CCD amplifier temperature sensor measurements in degrees Celsius.
    units = UNITTEMP
    
    default value = none none
    
    index = none 1-999
  - AMPVOL
```
public static final NOAOExt AMPVOL
```
    CCD amplifier voltage sensor measurements in volts. }
    units = UNITVOLT
    
    default value = none none
    
    index = none 1-999
  - AMPVOLn
```
public static final NOAOExt AMPVOLn
```
    CCD amplifier voltage sensor measurements in volts. }
    units = UNITVOLT
    
    default value = none none
    
    index = none 1-999
  - APAUnnn
```
public static final NOAOExt APAUnnn
```
    Aperture position angle unit.
    default value = PAUNIT APPAUNIT
    
    index = none 1-9999
  - APDEC
```
public static final NOAOExt APDEC
```
    Declination of the aperture(s).
    units = APDECU ADEU%4d
    
    default value = OBJDEC ODEC%4d
    
    index = none 1-9999
  - APDECU
```
public static final NOAOExt APDECU
```
    Declination unit.
    default value = OBJDECU APDECU
    
    index = none 1-9999
  - APDInnn
```
public static final NOAOExt APDInnn
```
    Aperture diameter of the aperture(s) for circular apertures and fibers. This is also used as an approximation to the size of hexagonal lenses.
    units = APUNIT
    
    default value = none APERDIA
    
    index = none 1-9999
  - APEPOCH
```
public static final NOAOExt APEPOCH
```
    Epoch of the coordinates for the aperture(s).
    units = 'yr'
    
    default value = OBJEPOCH OEPO%4d
    
    index = none 1-9999
  - APEQUIN
```
public static final NOAOExt APEQUIN
```
    Coordinate system equinox for the aperture(s). A value before 1984 is Besselian otherwise it is Julian.
    units = 'yr'
    
    default value = OBJEQUIN OEQU%4d
    
    index = none 1-9999
  - APERDIA
```
public static final NOAOExt APERDIA
```
    Aperture diameter of the aperture(s) for circular apertures and fibers. This is also used as an approximation to the size of hexagonal lenses.
    units = APUNIT
    
    default value = none APERDIA
    
    index = none 1-9999
  - APERLEN
```
public static final NOAOExt APERLEN
```
    Aperture length of the aperture(s) for slit apertures.
    units = APUNIT
    
    default value = none APERLEN
    
    index = none 1-999
  - APERnnn
```
public static final NOAOExt APERnnn
```
    Aperture identification. This can be a physical aperture identification, the name of a mask, a fiber configuration, etc. When there are many apertures the keyword APERTURE may be used to specify a configuration or mask identification and the APER%4d keywords can be used to identify some information about the aperture such as a fiber number.
    default value = none APERTURE
    
    index = none 1-9999
  - APERPA
```
public static final NOAOExt APERPA
```
    Aperture position angle of the aperture(s) on the sky. This is measured using the longest dimension from north to east for slits. For hexagonal lenslets it gives the position angle for one of the sides.
    units = APPAUNIT
    
    default value = none APERPA
    
    index = none 1-9999
  - APERWID
```
public static final NOAOExt APERWID
```
    Aperture identification. This can be a physical aperture identification, the name of a mask, a fiber configuration, etc. When there are many apertures the keyword APERTURE may be used to specify a configuration or mask identification and the APER%4d keywords can be used to identify some information about the aperture such as a fiber number.
    default value = none APERTURE
    
    index = none 1-9999
  - APLEnnn
```
public static final NOAOExt APLEnnn
```
    Aperture length of the aperture(s) for slit apertures.
    units = APUNIT
    
    default value = none APERLEN
    
    index = none 1-999
  - APPAnnn
```
public static final NOAOExt APPAnnn
```
    Aperture position angle of the aperture(s) on the sky. This is measured using the longest dimension from north to east for slits. For hexagonal lenslets it gives the position angle for one of the sides.
    units = APPAUNIT
    
    default value = none APERPA
    
    index = none 1-9999
  - APPAUNIT
```
public static final NOAOExt APPAUNIT
```
    Aperture position angle unit.
    default value = PAUNIT APPAUNIT
    
    index = none 1-9999
  - APRA
```
public static final NOAOExt APRA
```
    Right ascension of the aperture(s).
    units = APRAU ARAU%4d
    
    default value = OBJRA ORA%4d
    
    index = none 1-9999
  - APRADEC
```
public static final NOAOExt APRADEC
```
    Aperture coordinate system type for the aperture(s).
    default value = OBJRADEC ORDS%4d
    
    index = none 1-9999
  - APRAU
```
public static final NOAOExt APRAU
```
    Right ascension unit.
    default value = OBJRAU APRAU
    
    index = none 1-9999
  - APTYnnn
```
public static final NOAOExt APTYnnn
```
    Aperture type. This is an from a dictionary. The common types are "slit", "hole", "fiber", "hexlens", "hexlens+fiber" and "none". The last type is for aperture-less spectroscopy such as with objective prisms. Typically for multiobject spectroscopy all the aperture types will be the same and the keyword will be APTYPE.
    default value = none APTYPE
    
    index = none 1-9999
  - APTYPE
```
public static final NOAOExt APTYPE
```
    Aperture type. This is an from a dictionary. The common types are "slit", "hole", "fiber", "hexlens", "hexlens+fiber" and "none". The last type is for aperture-less spectroscopy such as with objective prisms. Typically for multiobject spectroscopy all the aperture types will be the same and the keyword will be APTYPE.
    default value = none APTYPE
    
    index = none 1-9999
  - APUNIT
```
public static final NOAOExt APUNIT
```
    Units of aperture dimensions. This applies to slit widths and lengths, fiber diameters, lenslet diameters, etc. It may be a physical dimension or a projected angle on the sky.
    default value = UNITAP APUNIT
    
    index = none 1-9999
  - APUNnnn
```
public static final NOAOExt APUNnnn
```
    Units of aperture dimensions. This applies to slit widths and lengths, fiber diameters, lenslet diameters, etc. It may be a physical dimension or a projected angle on the sky.
    default value = UNITAP APUNIT
    
    index = none 1-9999
  - APWInnn
```
public static final NOAOExt APWInnn
```
    Aperture width of the aperture(s) for slit apertures.
    units = APUNIT
    
    default value = none APERWID
    
    index = none 1-9999
  - ARAnnn
```
public static final NOAOExt ARAnnn
```
    Right ascension of the aperture(s).
    units = APRAU ARAU%4d
    
    default value = OBJRA ORA%4d
    
    index = none 1-9999
  - ARAUnnn
```
public static final NOAOExt ARAUnnn
```
    Right ascension unit.
    default value = OBJRAU APRAU
    
    index = none 1-9999
  - ARCHHWV
```
public static final NOAOExt ARCHHWV
```
    Archive hardware version.
    default value = none
    
    index = none
  - ARCHID
```
public static final NOAOExt ARCHID
```
    Archive identification. This may be the same as the observation identification.
    default value = OBSID none
    
    index = none none
  - ARCHIVE
```
public static final NOAOExt ARCHIVE
```
    The archive name in which the observation is archived.
    default value = none
    
    index = none
  - ARCHSTAT
```
public static final NOAOExt ARCHSTAT
```
    Archive status of data.
    default value = none
    
    index = none
  - ARCHSWV
```
public static final NOAOExt ARCHSWV
```
    Archive software version.
    default value = none
    
    index = none
  - ARCONG
```
public static final NOAOExt ARCONG
```
    Arcon predicted gain. This is the gain measured in the laboratory. The GAIN keyword may also have this value initially but it is updated to the most recent estimate of the gain.
    units = 'e/counts'
    
    default value = none
    
    index = none
  - ARCONGI
```
public static final NOAOExt ARCONGI
```
    Arcon gain index value.
    default value = none
    
    index = none
  - ARCONRN
```
public static final NOAOExt ARCONRN
```
    Arcon predicted RMS readout noise. This is the value measured in the laboratory. The RDNOISE keyword may also have this value initially but it is updated to the most current estimate.
    units = 'e'
    
    default value = none
    
    index = none
  - ARCONWD
```
public static final NOAOExt ARCONWD
```
    Arcon waveform complilation date.
    default value = none
    
    index = none
  - ARCONWM
```
public static final NOAOExt ARCONWM
```
    Arcon waveform options enabled.
    default value = none
    
    index = none
  - ARDSnnn
```
public static final NOAOExt ARDSnnn
```
    Aperture coordinate system type for the aperture(s).
    default value = OBJRADEC ORDS%4d
    
    index = none 1-9999
  - ATMn_n
```
public static final NOAOExt ATMn_n
```
    Transformation matrix between CCD and amplifier coordinates. Normally only two values will be non-zero and will have values of 1 or -1. If missing the default is an identify matrix.
    default value = 0.(i!=j),1.(i=j)
    
    index = 1-9,1-9
  - ATVn
```
public static final NOAOExt ATVn
```
    Transformation origin vector between CCD and amplifier coordinates.
    default value = 0.
    
    index = 1-9
  - BIASnnn
```
public static final NOAOExt BIASnnn
```
    Section of the recorded image containing overscan or prescan data. This will be in binned pixels if binning is done. Multiple regions may be recorded and specified, such as both prescan and overscan, but the first section given by this parameter is likely to be the one used during calibration.
    default value = none none
    
    index = none 1-9999
  - BIASSEC
```
public static final NOAOExt BIASSEC
```
    Section of the recorded image containing overscan or prescan data. This will be in binned pixels if binning is done. Multiple regions may be recorded and specified, such as both prescan and overscan, but the first section given by this parameter is likely to be the one used during calibration.
    default value = none none
    
    index = none 1-9999
  - BPM
```
public static final NOAOExt BPM
```
    Description of bad pixels. The value is an IRAF bad pixel mask name.
    default value = none
    
    index = none
  - CAMCONF
```
public static final NOAOExt CAMCONF
```
    Camera configuration.
    default value = none
    
    index = none
  - CAMERA
```
public static final NOAOExt CAMERA
```
    Camera name.
    default value = none
    
    index = none
  - CAMFOCUS
```
public static final NOAOExt CAMFOCUS
```
    Camera focus.
    units = 'instrumental'
    
    default value = none
    
    index = none
  - CAMHWV
```
public static final NOAOExt CAMHWV
```
    Camera hardware version.
    default value = none
    
    index = none
  - CAMMJD
```
public static final NOAOExt CAMMJD
```
    Times for the instrument sensor measurements given as modified Julian dates.
    units = 'd'
    
    default value = MJD-OBS CAMMJD
    
    index = none 1-999
  - CAMMJDn
```
public static final NOAOExt CAMMJDn
```
    Times for the instrument sensor measurements given as modified Julian dates.
    units = 'd'
    
    default value = MJD-OBS CAMMJD
    
    index = none 1-999
  - CAMPAN
```
public static final NOAOExt CAMPAN
```
    Camera position angle measurements in appropriate units.
    units = UNITANG
    
    default value = none none
    
    index = none 1-999
  - CAMPANn
```
public static final NOAOExt CAMPANn
```
    Camera position angle measurements in appropriate units.
    units = UNITANG
    
    default value = none none
    
    index = none 1-999
  - CAMPOS
```
public static final NOAOExt CAMPOS
```
    Camera linear position sensor measurements in appropriate units.
    default value = none none
    
    index = none 1-999
  - CAMPOSn
```
public static final NOAOExt CAMPOSn
```
    Camera linear position sensor measurements in appropriate units.
    default value = none none
    
    index = none 1-999
  - CAMPRE
```
public static final NOAOExt CAMPRE
```
    Camera pressure sensor measurements in appropriate units.
    units = UNITPRES
    
    default value = none none
    
    index = none 1-999
  - CAMPREn
```
public static final NOAOExt CAMPREn
```
    Camera pressure sensor measurements in appropriate units.
    units = UNITPRES
    
    default value = none none
    
    index = none 1-999
  - CAMSTAT
```
public static final NOAOExt CAMSTAT
```
    Camera status.
    default value = none
    
    index = none
  - CAMSWV
```
public static final NOAOExt CAMSWV
```
    Camera software version.
    default value = none
    
    index = none
  - CAMTEM
```
public static final NOAOExt CAMTEM
```
    Camera temperature sensor measurements in degrees Celsius.
    units = UNITTEMP
    
    default value = none none
    
    index = none 1-999
  - CAMTEMn
```
public static final NOAOExt CAMTEMn
```
    Camera temperature sensor measurements in degrees Celsius.
    units = UNITTEMP
    
    default value = none none
    
    index = none 1-999
  - CAMVOL
```
public static final NOAOExt CAMVOL
```
    Camera voltage sensor measurements in volts.
    units = UNITVOLT
    
    default value = none none
    
    index = none 1-999
  - CAMVOLn
```
public static final NOAOExt CAMVOLn
```
    Camera voltage sensor measurements in volts.
    units = UNITVOLT
    
    default value = none none
    
    index = none 1-999
  - CCDDEC
```
public static final NOAOExt CCDDEC
```
    Declination of the CCD center.
    units = CCDDECU
    
    default value = DETDEC
    
    index = none
  - CCDDECU
```
public static final NOAOExt CCDDECU
```
    Declination unit.
    default value = DETDECU
    
    index = none
  - CCDEPOCH
```
public static final NOAOExt CCDEPOCH
```
    Epoch of the CCD center coordinates.
    units = 'yr'
    
    default value = DETEPOCH
    
    index = none
  - CCDEQUIN
```
public static final NOAOExt CCDEQUIN
```
    CCD coordinate system equinox. A value before 1984 is Besselian otherwise it is Julian.
    units = 'yr'
    
    default value = DETEQUIN
    
    index = none
  - CCDHWV
```
public static final NOAOExt CCDHWV
```
    CCD hardware version
    default value = DETHWV
    
    index = none
  - CCDMJD
```
public static final NOAOExt CCDMJD
```
    Times for the CCD sensor measurements given as modified Julian dates. The MJDHDR keyword may be used for the time at which the image header is created or the MJD-OBS keyword may be used for the time of observation.
    units = 'd'
    
    default value = MJDHDR CCDMJD
    
    index = none 1-999
  - CCDMJDn
```
public static final NOAOExt CCDMJDn
```
    Times for the CCD sensor measurements given as modified Julian dates. The MJDHDR keyword may be used for the time at which the image header is created or the MJD-OBS keyword may be used for the time of observation.
    units = 'd'
    
    default value = MJDHDR CCDMJD
    
    index = none 1-999
  - CCDNAME
```
public static final NOAOExt CCDNAME
```
    CCD identification.
    default value = DETECTOR
    
    index = none
  - CCDNAMPS
```
public static final NOAOExt CCDNAMPS
```
    Number of amplifiers used to readout the CCD. This keyword may be absent if only one amplifier is used.
    default value = 1
    
    index = none
  - CCDPAN
```
public static final NOAOExt CCDPAN
```
    CCD position angle measurements in appropriate units.
    default value = none none
    
    index = none 1-999
  - CCDPANn
```
public static final NOAOExt CCDPANn
```
    CCD position angle measurements in appropriate units.
    default value = none none
    
    index = none 1-999
  - CCDPOS
```
public static final NOAOExt CCDPOS
```
    CCD linear position sensor measurements in appropriate units.
    default value = none none
    
    index = none 1-999
  - CCDPOSn
```
public static final NOAOExt CCDPOSn
```
    CCD linear position sensor measurements in appropriate units.
    default value = none none
    
    index = none 1-999
  - CCDPRE
```
public static final NOAOExt CCDPRE
```
    CCD pressure sensor measurements in appropriate units.
    units = UNITPRES
    
    default value = none none
    
    index = none 1-999
  - CCDPREn
```
public static final NOAOExt CCDPREn
```
    CCD pressure sensor measurements in appropriate units.
    units = UNITPRES
    
    default value = none none
    
    index = none 1-999
  - CCDPSIZE
```
public static final NOAOExt CCDPSIZE
```
    The actual format size of the CCD. This is the same as the CCDSIZE keyword except in the case of drift scanning.
    default value = none
    
    index = none
  - CCDRA
```
public static final NOAOExt CCDRA
```
    Right ascension of the CCD center.
    units = CCDRAU
    
    default value = DETRA
    
    index = none
  - CCDRADEC
```
public static final NOAOExt CCDRADEC
```
    CCD coordinate system type.
    default value = DETRADEC
    
    index = none
  - CCDRAU
```
public static final NOAOExt CCDRAU
```
    Right ascension unit.
    default value = DETRAU
    
    index = none
  - CCDSEC
```
public static final NOAOExt CCDSEC
```
    The unbinned section of the logical CCD pixel raster covered by the amplifier readout in section notation. The section must map directly to the specified data section through the binning and CCD to image coordiante transformation. The image data section (DATASEC) is specified with the starting pixel less than the ending pixel. Thus the order of this section may be flipped depending on the coordinate transformation (which depends on how the CCD coordinate system is defined).
    default value = CCDSIZE
    
    index = none
  - CCDSIZE
```
public static final NOAOExt CCDSIZE
```
    The logical unbinned size of the CCD in section notation. Normally this would be the physical size of the CCD unless drift scanning is done. This is the full size even when subraster readouts are done.
    default value = DETSIZE
    
    index = none
  - CCDSUM
```
public static final NOAOExt CCDSUM
```
    CCD on-chip summing given as two or four integer numbers. These define the summing of CCD pixels in the amplifier readout order. The first two numbers give the number of pixels summed in the serial and parallel directions respectively. If the first pixel read out consists of fewer unbinned pixels along either direction the next two numbers give the number of pixels summed for the first serial and parallel pixels. From this it is implicit how many pixels are summed for the last pixels given the size of the CCD section (CCDSEC). It is highly recommended that controllers read out all pixels with the same summing in which case the size of the CCD section will be the summing factors times the size of the data section.
    default value = '1 1'
    
    index = none
  - CCDSWV
```
public static final NOAOExt CCDSWV
```
    CCD software version
    default value = DETSWV
    
    index = none
  - CCDTEM
```
public static final NOAOExt CCDTEM
```
    CCD temperature sensor measurements in degrees Celsius.
    units = UNITTEMP
    
    default value = none none
    
    index = none 1-999
  - CCDTEMn
```
public static final NOAOExt CCDTEMn
```
    CCD temperature sensor measurements in degrees Celsius.
    units = UNITTEMP
    
    default value = none none
    
    index = none 1-999
  - CCDVOL
```
public static final NOAOExt CCDVOL
```
    CCD voltage sensor measurements in volts.
    units = UNITVOLT
    
    default value = none none
    
    index = none 1-999
  - CCDVOLn
```
public static final NOAOExt CCDVOLn
```
    CCD voltage sensor measurements in volts.
    units = UNITVOLT
    
    default value = none none
    
    index = none 1-999
  - CD1_1
```
public static final NOAOExt CD1_1
```
    Spectrum coordinate matrix. World coordinate axis 1 is defined to be the dispersion and the other axes are spatial. The matrix implies a dispersion axis in the image coordinates.
    units = CUNIT1/pixel CUN1%4d/pixel
    
    default value = 1. CD1_1
    
    index = none 1-9999
  - CD1_2
```
public static final NOAOExt CD1_2
```
    Spectrum coordinate matrix. World coordinate axis 1 is defined to be the dispersion and the other axes are spatial. The matrix implies a dispersion axis in the image coordinates.
    units = CUNIT1/pixel CUN1%4d/pixel
    
    default value = 0. CD1_2
    
    index = none 1-9999
  - CD11nnn
```
public static final NOAOExt CD11nnn
```
    Spectrum coordinate matrix. World coordinate axis 1 is defined to be the dispersion and the other axes are spatial. The matrix implies a dispersion axis in the image coordinates.
    units = CUNIT1/pixel CUN1%4d/pixel
    
    default value = 1. CD1_1
    
    index = none 1-9999
  - CD12nnn
```
public static final NOAOExt CD12nnn
```
    Spectrum coordinate matrix. World coordinate axis 1 is defined to be the dispersion and the other axes are spatial. The matrix implies a dispersion axis in the image coordinates.
    units = CUNIT1/pixel CUN1%4d/pixel
    
    default value = 0. CD1_2
    
    index = none 1-9999
  - CD2_1
```
public static final NOAOExt CD2_1
```
    Spectrum coordinate matrix. World coordinate axis 1 is defined to be the dispersion and the other axes are spatial. The matrix implies a dispersion axis in the image coordinates.
    units = CUNIT2/pixel CUN2%4d/pixel
    
    default value = 0. CD2_1
    
    index = none 1-9999
  - CD2_2
```
public static final NOAOExt CD2_2
```
    Spectrum coordinate matrix. World coordinate axis 1 is defined to be the dispersion and the other axes are spatial. The matrix implies a dispersion axis in the image coordinates.
    units = CUNIT2/pixel CUN2%4d/pixel
    
    default value = 1. CD2_2
    
    index = none 1-9999
  - CD21nnn
```
public static final NOAOExt CD21nnn
```
    Spectrum coordinate matrix. World coordinate axis 1 is defined to be the dispersion and the other axes are spatial. The matrix implies a dispersion axis in the image coordinates.
    units = CUNIT2/pixel CUN2%4d/pixel
    
    default value = 0. CD2_1
    
    index = none 1-9999
  - CD22nnn
```
public static final NOAOExt CD22nnn
```
    Spectrum coordinate matrix. World coordinate axis 1 is defined to be the dispersion and the other axes are spatial. The matrix implies a dispersion axis in the image coordinates.
    units = CUNIT2/pixel CUN2%4d/pixel
    
    default value = 1. CD2_2
    
    index = none 1-9999
  - CHPANGLE
```
public static final NOAOExt CHPANGLE
```
    Coordinate scale matrix for image world coordinates. This describes the scales and rotations of the coordinate axes.
    units = CUNIT2/pixel CUN2%4d/pixel
    
    default value = 1. CD2_2
    
    index = none 1-9999
  - CHPDIST
```
public static final NOAOExt CHPDIST
```
    default value = none
    
    index = none
  - CHPFREQ
```
public static final NOAOExt CHPFREQ
```
    default value = none
    
    index = none
  - CHPHWV
```
public static final NOAOExt CHPHWV
```
    default value = none
    
    index = none
  - CHPMJD
```
public static final NOAOExt CHPMJD
```
    Times for the chopping system sensor measurements given as modified Julian dates.
    units = 'd'
    
    default value = MJDHDR CHPMJD
    
    index = none 1-999
  - CHPMJDn
```
public static final NOAOExt CHPMJDn
```
    Times for the chopping system sensor measurements given as modified Julian dates.
    units = 'd'
    
    default value = MJDHDR CHPMJD
    
    index = none 1-999
  - CHPNCHOP
```
public static final NOAOExt CHPNCHOP
```
    default value = none
    
    index = none
  - CHPPAN
```
public static final NOAOExt CHPPAN
```
    Chopping system position angle measurements in appropriate units. Note that CHPANGLE should be used for the chopping angle and these keywords are for other system position angle measurements.
    default value = none none
    
    index = none 1-999
  - CHPPANn
```
public static final NOAOExt CHPPANn
```
    Chopping system position angle measurements in appropriate units. Note that CHPANGLE should be used for the chopping angle and these keywords are for other system position angle measurements.
    default value = none none
    
    index = none 1-999
  - CHPPOS
```
public static final NOAOExt CHPPOS
```
    Chopping system linear position sensor measurements in appropriate units.
    default value = none none
    
    index = none 1-999
  - CHPPOSn
```
public static final NOAOExt CHPPOSn
```
    Chopping system linear position sensor measurements in appropriate units.
    default value = none none
    
    index = none 1-999
  - CHPPRE
```
public static final NOAOExt CHPPRE
```
    Chopping system pressure sensor measurements in appropriate units.
    units = UNITPRES
    
    default value = none none
    
    index = none 1-999
  - CHPPREn
```
public static final NOAOExt CHPPREn
```
    Chopping system pressure sensor measurements in appropriate units.
    units = UNITPRES
    
    default value = none none
    
    index = none 1-999
  - CHPSTAT
```
public static final NOAOExt CHPSTAT
```
    default value = none
    
    index = none
  - CHPSWV
```
public static final NOAOExt CHPSWV
```
    default value = none
    
    index = none
  - CHPTEM
```
public static final NOAOExt CHPTEM
```
    Chopping system temperature sensor measurements in degrees Celsius.
    units = UNITTEMP
    
    default value = none none
    
    index = none 1-999
  - CHPTEMn
```
public static final NOAOExt CHPTEMn
```
    Chopping system temperature sensor measurements in degrees Celsius.
    units = UNITTEMP
    
    default value = none none
    
    index = none 1-999
  - CHPVOL
```
public static final NOAOExt CHPVOL
```
    Chopping system voltage sensor measurements in volts.
    units = UNITVOLT
    
    default value = none none
    
    index = none 1-999
  - CHPVOLn
```
public static final NOAOExt CHPVOLn
```
    Chopping system voltage sensor measurements in volts.
    units = UNITVOLT
    
    default value = none none
    
    index = none 1-999
  - CMAX1
```
public static final NOAOExt CMAX1
```
    Dispersion limit for the region occupied by the spectrum.
    units = CUNIT1 CUN1%4d
    
    default value = none CMAX1
    
    index = none 1-9999
  - CMAX2
```
public static final NOAOExt CMAX2
```
    Cross-dispersion limit for the region occupied by the spectrum.
    units = CUNIT2 CUN2%4d
    
    default value = none CMAX2
    
    index = none 1-9999
  - CMIN1
```
public static final NOAOExt CMIN1
```
    Dispersion limit for the region occupied by the spectrum.
    units = CUNIT1 CUN1%4d
    
    default value = none CMIN1
    
    index = none 1-9999
  - CMIN2
```
public static final NOAOExt CMIN2
```
    Cross-dispersion limit for the region occupied by the spectrum.
    units = CUNIT2 CUN2%4d
    
    default value = none CMIN2
    
    index = none 1-9999
  - CMMTnnn
```
public static final NOAOExt CMMTnnn
```
    Observer comments.
    default value = none
    
    index = 1-9999
  - CMN1nnn
```
public static final NOAOExt CMN1nnn
```
    Dispersion limit for the region occupied by the spectrum.
    units = CUNIT1 CUN1%4d
    
    default value = none CMIN1
    
    index = none 1-9999
  - CMN2nnn
```
public static final NOAOExt CMN2nnn
```
    Cross-dispersion limit for the region occupied by the spectrum.
    units = CUNIT2 CUN2%4d
    
    default value = none CMIN2
    
    index = none 1-9999
  - CMX1nnn
```
public static final NOAOExt CMX1nnn
```
    Dispersion limit for the region occupied by the spectrum.
    units = CUNIT1 CUN1%4d
    
    default value = none CMAX1
    
    index = none 1-9999
  - CMX2nnn
```
public static final NOAOExt CMX2nnn
```
    Cross-dispersion limit for the region occupied by the spectrum.
    units = CUNIT2 CUN2%4d
    
    default value = none CMAX2
    
    index = none 1-9999
  - CONHWV
```
public static final NOAOExt CONHWV
```
    Controller hardware version.
    default value = none
    
    index = none
  - CONSTAT
```
public static final NOAOExt CONSTAT
```
    Controller status.
    default value = none
    
    index = none
  - CONSWV
```
public static final NOAOExt CONSWV
```
    Controller software version.
    default value = none
    
    index = none
  - CONTROLR
```
public static final NOAOExt CONTROLR
```
    Detector controller name.
    default value = none
    
    index = none
  - CORRCT
```
public static final NOAOExt CORRCT
```
    Correctors in the optical path.
    default value = none none
    
    index = none 1-999
  - CORRCTn
```
public static final NOAOExt CORRCTn
```
    Correctors in the optical path.
    default value = none none
    
    index = none 1-999
  - CORRCTOR
```
public static final NOAOExt CORRCTOR
```
    Correctors in the optical path.
    default value = none
    
    index = none
  - CROSUNIT
```
public static final NOAOExt CROSUNIT
```
    Default cross dispersion unit.
    default value = 'arcsec'
    
    index = none
  - CROSVAL
```
public static final NOAOExt CROSVAL
```
    Default cross dispersion coordinate value.
    units = CROSUNIT
    
    default value = none
    
    index = none
  - CRP1nnn
```
public static final NOAOExt CRP1nnn
```
    Reference spectrum pixel coordinate. Generally this should be the at the center of the spectrum. In raw data the spectrum position(s) may be predicted apart from an offset that will be determined during data reduction.
    units = 'pixel' 'pixel'
    
    default value = none CRPIX1
    
    index = none 1-9999
  - CRP2nnn
```
public static final NOAOExt CRP2nnn
```
    Reference spectrum pixel coordinate. Generally this should be the at the center of the spectrum. In raw data the spectrum position(s) may be predicted apart from an offset that will be determined during data reduction.
    units = 'pixel' 'pixel'
    
    default value = none CRPIX2
    
    index = none 1-9999
  - CRPIX1
```
public static final NOAOExt CRPIX1
```
    Reference spectrum pixel coordinate. Generally this should be the at the center of the spectrum. In raw data the spectrum position(s) may be predicted apart from an offset that will be determined during data reduction.
    units = 'pixel' 'pixel'
    
    default value = none CRPIX1
    
    index = none 1-9999
  - CRPIX2
```
public static final NOAOExt CRPIX2
```
    Reference spectrum pixel coordinate. Generally this should be the at the center of the spectrum. In raw data the spectrum position(s) may be predicted apart from an offset that will be determined during data reduction.
    units = 'pixel' 'pixel'
    
    default value = none CRPIX2
    
    index = none 1-9999
  - CRV1nnn
```
public static final NOAOExt CRV1nnn
```
    Spectrum reference dispersion coordinate corresponding to the spectrum reference pixel coordinate. Note that by definition WCS axis 1 is always the dispersion axis. The mapping of this WCS axis to the dispersion direction in the image is given by the coordinate transformation matrix keywords. In raw data the reference dispersion coordinate may be approximately predicted. This will be refined during data reductions.
    units = CUNIT1 CUN1%4d
    
    default value = none CRVAL1
    
    index = none 1-9999
  - CRV2nnn
```
public static final NOAOExt CRV2nnn
```
    Spectrum reference dispersion coordinate corresponding to the spectrum reference pixel coordinate. Note that by definition WCS axis 1 is always the dispersion axis. The mapping of this WCS axis to the dispersion direction in the image is given by the coordinate transformation matrix keywords. In raw data the reference dispersion coordinate may be approximately predicted. This will be refined during data reductions.
    units = CUNIT1 CUN1%4d
    
    default value = 0. CRVAL1
    
    index = none 1-9999
  - CRVAL1
```
public static final NOAOExt CRVAL1
```
    Spectrum reference dispersion coordinate corresponding to the spectrum reference pixel coordinate. Note that by definition WCS axis 1 is always the dispersion axis. The mapping of this WCS axis to the dispersion direction in the image is given by the coordinate transformation matrix keywords. In raw data the reference dispersion coordinate may be approximately predicted. This will be refined during data reductions.
    units = CUNIT1 CUN1%4d
    
    default value = none CRVAL1
    
    index = none 1-9999
  - CRVAL2
```
public static final NOAOExt CRVAL2
```
    Reference right ascension coordinate corresponding to the image reference pixel coordinate. Note that by definition WCS axis 1 is always the right ascension axis. The mapping of this WCS axis to the right ascension direction in the image is given by the coordinate transformation matrix keywords. In raw data the reference right ascension coordinate may be only approximate. This will be refined during data reductions.
    units = CUNIT1 CUN1%4d
    
    default value = 0. CRVAL1
    
    index = none 1-9999
  - CTY1nnn
```
public static final NOAOExt CTY1nnn
```
    Reference declination coordinate corresponding to the image reference pixel coordinate. Note that by definition WCS axis 1 is always the declination axis. The mapping of this WCS axis to the declination direction in the image is given by the coordinate transformation matrix keywords. In raw data the reference right ascension coordinate may be only approximate. This will be refined during data reductions.
    units = CUNIT2 CUN2%4d
    
    default value = 0. CRVAL2
    
    index = none 1-9999
  - CTY2nnn
```
public static final NOAOExt CTY2nnn
```
    Coordinate type for image world coordinates. The IRAF WCS standards are used (which is generally the FITS standard).
    default value = 'LINEAR' CTYPE1
    
    index = none 1-9999
  - CTYP2nnn
```
public static final NOAOExt CTYP2nnn
```
    Coordinate type for image world coordinates. The IRAF WCS standards are used (which is generally the FITS standard).
    default value = 'LINEAR' CTYPE2
    
    index = none 1-9999
  - CTYPE1
```
public static final NOAOExt CTYPE1
```
    Spectrum dispersion coordinate type. These are the FITS defined types.
    default value = 'LINEAR' CTYPE1
    
    index = none 1-9999
  - CTYPE2
```
public static final NOAOExt CTYPE2
```
    Coordinate type for image world coordinates. The IRAF WCS standards are used (which is generally the FITS standard).
    default value = 'LINEAR' CTYPE1
    
    index = none 1-9999
  - CUN1nnn
```
public static final NOAOExt CUN1nnn
```
    Coordinate type for image world coordinates. The IRAF WCS standards are used (which is generally the FITS standard).
    default value = 'LINEAR' CTYPE2
    
    index = none 1-9999
  - CUN2nnn
```
public static final NOAOExt CUN2nnn
```
    Coordinate reference unit for direct imaging world coordinates.
    default value = RAUNIT CUNIT1
    
    index = none 1-9999
  - CUNIT1
```
public static final NOAOExt CUNIT1
```
    Coordinate reference unit for direct imaging world coordinates.
    default value = DECUNIT CUNIT2
    
    index = none 1-9999
  - CUNIT2
```
public static final NOAOExt CUNIT2
```
    Coordinate reference unit for direct imaging world coordinates.
    default value = RAUNIT CUNIT1
    
    index = none 1-9999
  - DARKTIME
```
public static final NOAOExt DARKTIME
```
    Total dark time of the observation. This is the total time during which dark current is collected by the detector. If the times in the extension are different the primary HDU gives one of the extension times.
    units = UNITTIME
    
    default value = EXPTIME
    
    index = none
  - DATASEC
```
public static final NOAOExt DATASEC
```
    Mapping of the CCD section to image coordinates.
    default value = none
    
    index = none
  - DATEEND
```
public static final NOAOExt DATEEND
```
    Date at the end of the exposure. The format follows the FITS standard.
    default value = none
    
    index = none
  - DATEHDR
```
public static final NOAOExt DATEHDR
```
    Date header creation. The format follows the FITS 'date' standard.
    default value = DATE-OBS
    
    index = none
  - DATEOBS
```
public static final NOAOExt DATEOBS
```
    Default date for the observation. This keyword is generally not used and is DATE-OBS keyword for the start of the exposure on the detector is used.
    default value = DATE-OBS
    
    index = none
  - DECPANGL
```
public static final NOAOExt DECPANGL
```
    Projected position angle of the positive declination axis on the detector. The position angle is measured clockwise from the image y axis.
    units = UNITPA
    
    default value = none
    
    index = none
  - DECUNIT
```
public static final NOAOExt DECUNIT
```
    Default declination units.
    default value = UNITDEC
    
    index = none
  - DETCONF
```
public static final NOAOExt DETCONF
```
    Detector configuration.
    default value = none
    
    index = none
  - DETDEC
```
public static final NOAOExt DETDEC
```
    Declination of the detector center.
    units = DETDECU
    
    default value = TELDEC
    
    index = none
  - DETDECU
```
public static final NOAOExt DETDECU
```
    Declination unit.
    default value = TELDECU
    
    index = none
  - DETECTOR
```
public static final NOAOExt DETECTOR
```
    Detector name.
    default value = none
    
    index = none
  - DETEPOCH
```
public static final NOAOExt DETEPOCH
```
    Epoch of the detector center coordinates.
    units = 'yr'
    
    default value = TELEPOCH
    
    index = none
  - DETEQUIN
```
public static final NOAOExt DETEQUIN
```
    Detector coordinate system equinox. A value before 1984 is Besselian otherwise it is Julian.
    units = 'yr'
    
    default value = TELEQUIN
    
    index = none
  - DETHWV
```
public static final NOAOExt DETHWV
```
    Detector hardware version.
    default value = none
    
    index = none
  - DETMJD
```
public static final NOAOExt DETMJD
```
    Times for the detector sensor measurements given as modified Julian dates. The MJDHDR keyword may be used for the time at which the image header is created or the MJD-OBS keyword may be used for the time of observation.
    units = 'd'
    
    default value = MJD-OBS DETMJD
    
    index = none 1-999
  - DETMJDn
```
public static final NOAOExt DETMJDn
```
    Times for the detector sensor measurements given as modified Julian dates. The MJDHDR keyword may be used for the time at which the image header is created or the MJD-OBS keyword may be used for the time of observation.
    units = 'd'
    
    default value = MJD-OBS DETMJD
    
    index = none 1-999
  - DETPAN
```
public static final NOAOExt DETPAN
```
    Detector position angle measurements in appropriate units.
    default value = none none
    
    index = none 1-999
  - DETPANn
```
public static final NOAOExt DETPANn
```
    Detector position angle measurements in appropriate units.
    default value = none none
    
    index = none 1-999
  - DETPOS
```
public static final NOAOExt DETPOS
```
    Detector linear position sensor measurements in appropriate units.
    default value = none none
    
    index = none 1-999
  - DETPOSn
```
public static final NOAOExt DETPOSn
```
    Detector linear position sensor measurements in appropriate units.
    default value = none none
    
    index = none 1-999
  - DETPRE
```
public static final NOAOExt DETPRE
```
    Detector pressure sensor measurements in appropriate units.
    units = UNITPRES
    
    default value = none none
    
    index = none 1-999
  - DETPREn
```
public static final NOAOExt DETPREn
```
    Detector pressure sensor measurements in appropriate units.
    units = UNITPRES
    
    default value = none none
    
    index = none 1-999
  - DETRA
```
public static final NOAOExt DETRA
```
    Right ascension of the detector center.
    units = DETRAU
    
    default value = TELRA
    
    index = none
  - DETRADEC
```
public static final NOAOExt DETRADEC
```
    Detector coordinate system type.
    default value = TELRADEC
    
    index = none
  - DETRAU
```
public static final NOAOExt DETRAU
```
    Right ascension unit.
    default value = TELRAU
    
    index = none
  - DETSEC
```
public static final NOAOExt DETSEC
```
    Mapping of the CCD section to detector coordinates.
    default value = none
    
    index = none
  - DETSIZE
```
public static final NOAOExt DETSIZE
```
    The logical unbinned size of the detector in section notation. This is the full pixel raster size including, if applicable, drift scanning or a mosaic format. This is the full size even when subraster readouts are done.
    default value = none
    
    index = none
  - DETSTAT
```
public static final NOAOExt DETSTAT
```
    Detector status.
    default value = none
    
    index = none
  - DETSWV
```
public static final NOAOExt DETSWV
```
    Detector software version. This will not generally be used and the controller software version will apply.
    default value = none
    
    index = none
  - DETTEM
```
public static final NOAOExt DETTEM
```
    Detector temperature sensor measurements in degrees Celsius.
    units = UNITTEMP
    
    default value = none none
    
    index = none 1-999
  - DETTEMn
```
public static final NOAOExt DETTEMn
```
    Detector temperature sensor measurements in degrees Celsius.
    units = UNITTEMP
    
    default value = none none
    
    index = none 1-999
  - DETVOL
```
public static final NOAOExt DETVOL
```
    Detector voltage sensor measurements in volts.
    units = UNITVOLT
    
    default value = none none
    
    index = none 1-999
  - DETVOLn
```
public static final NOAOExt DETVOLn
```
    Detector voltage sensor measurements in volts.
    units = UNITVOLT
    
    default value = none none
    
    index = none 1-999
  - DEWAR
```
public static final NOAOExt DEWAR
```
    Dewar identification.
    default value = none
    
    index = none
  - DEWHWV
```
public static final NOAOExt DEWHWV
```
    Dewar hardware version.
    default value = none
    
    index = none
  - DEWMJD
```
public static final NOAOExt DEWMJD
```
    Times for the dewar sensor measurements given as modified Julian dates. The MJDHDR keyword may be used for the time at which the image header is created or the MJD-OBS keyword may be used for the time of observation.
    units = 'd'
    
    default value = MJD-OBS DEWMJD
    
    index = none 1-999
  - DEWMJDn
```
public static final NOAOExt DEWMJDn
```
    Times for the dewar sensor measurements given as modified Julian dates. The MJDHDR keyword may be used for the time at which the image header is created or the MJD-OBS keyword may be used for the time of observation.
    units = 'd'
    
    default value = MJD-OBS DEWMJD
    
    index = none 1-999
  - DEWPAN
```
public static final NOAOExt DEWPAN
```
    Dewar position angle measurements in appropriate units.
    default value = none none
    
    index = none 1-999
  - DEWPANn
```
public static final NOAOExt DEWPANn
```
    Dewar position angle measurements in appropriate units.
    default value = none none
    
    index = none 1-999
  - DEWPOS
```
public static final NOAOExt DEWPOS
```
    Dewar linear position sensor measurements in appropriate units.
    default value = none none
    
    index = none 1-999
  - DEWPOSn
```
public static final NOAOExt DEWPOSn
```
    Dewar linear position sensor measurements in appropriate units.
    default value = none none
    
    index = none 1-999
  - DEWPRE
```
public static final NOAOExt DEWPRE
```
    Dewar pressure sensor measurements in appropriate units.
    units = UNITPRES
    
    default value = none none
    
    index = none 1-999
  - DEWPREn
```
public static final NOAOExt DEWPREn
```
    Dewar pressure sensor measurements in appropriate units.
    units = UNITPRES
    
    default value = none none
    
    index = none 1-999
  - DEWSTAT
```
public static final NOAOExt DEWSTAT
```
    Dewar status.
    default value = none
    
    index = none
  - DEWSWV
```
public static final NOAOExt DEWSWV
```
    Dewar software version.
    default value = none
    
    index = none
  - DEWTEM
```
public static final NOAOExt DEWTEM
```
    Dewar temperature sensor measurements in degrees Celsius.
    units = UNITTEMP
    
    default value = none none
    
    index = none 1-999
  - DEWTEMn
```
public static final NOAOExt DEWTEMn
```
    Dewar temperature sensor measurements in degrees Celsius.
    units = UNITTEMP
    
    default value = none none
    
    index = none 1-999
  - DEWVOL
```
public static final NOAOExt DEWVOL
```
    Dewar voltage sensor measurements in volts.
    units = UNITVOLT
    
    default value = none none
    
    index = none 1-999
  - DEWVOLn
```
public static final NOAOExt DEWVOLn
```
    Dewar voltage sensor measurements in volts.
    units = UNITVOLT
    
    default value = none none
    
    index = none 1-999
  - DISMJD
```
public static final NOAOExt DISMJD
```
    Times for the disperser sensor measurements given as modified Julian dates.
    units = 'd'
    
    default value = MJD-OBS DISMJD
    
    index = none 1-999
  - DISMJDn
```
public static final NOAOExt DISMJDn
```
    Times for the disperser sensor measurements given as modified Julian dates.
    units = 'd'
    
    default value = MJD-OBS DISMJD
    
    index = none 1-999
  - DISPAN
```
public static final NOAOExt DISPAN
```
    Disperser position angle measurements in appropriate units.
    default value = none none
    
    index = none 1-999
  - DISPANn
```
public static final NOAOExt DISPANn
```
    Disperser position angle measurements in appropriate units.
    default value = none none
    
    index = none 1-999
  - DISPAXIS
```
public static final NOAOExt DISPAXIS
```
    The detector axis along which the dispersion is most closely aligned.
    default value = none
    
    index = none
  - DISPDW
```
public static final NOAOExt DISPDW
```
    Approximate central dispersion/pixel on the detector.
    units = DISPUNIT
    
    default value = none
    
    index = none
  - DISPER
```
public static final NOAOExt DISPER
```
    Disperser identification names.
    default value = none none
    
    index = none 1-999
  - DISPERn
```
public static final NOAOExt DISPERn
```
    Disperser identification names.
    default value = none none
    
    index = none 1-999
  - DISPOS
```
public static final NOAOExt DISPOS
```
    Disperser linear position sensor measurements in appropriate units.
    default value = none none
    
    index = none 1-999
  - DISPOSn
```
public static final NOAOExt DISPOSn
```
    Disperser linear position sensor measurements in appropriate units.
    default value = none none
    
    index = none 1-999
  - DISPRE
```
public static final NOAOExt DISPRE
```
    Disperser pressure sensor measurements in appropriate units.
    units = UNITPRES
    
    default value = none none
    
    index = none 1-999
  - DISPREn
```
public static final NOAOExt DISPREn
```
    Disperser pressure sensor measurements in appropriate units.
    units = UNITPRES
    
    default value = none none
    
    index = none 1-999
  - DISPUNIT
```
public static final NOAOExt DISPUNIT
```
    Default dispersion coordinate unit.
    default value = 'Angstrom'
    
    index = none
  - DISPVAL
```
public static final NOAOExt DISPVAL
```
    Default dispersion coordinate value.
    units = DISPUNIT
    
    default value = none
    
    index = none
  - DISPWC
```
public static final NOAOExt DISPWC
```
    Approximate central dispersion coordinate on the detector.
    units = DISPUNIT
    
    default value = none
    
    index = none
  - DISTEM
```
public static final NOAOExt DISTEM
```
    Disperser temperature sensor measurements in degrees Celsius.
    units = UNITTEMP
    
    default value = none none
    
    index = none 1-999
  - DISTEMn
```
public static final NOAOExt DISTEMn
```
    Disperser temperature sensor measurements in degrees Celsius.
    units = UNITTEMP
    
    default value = none none
    
    index = none 1-999
  - DISVOL
```
public static final NOAOExt DISVOL
```
    Disperser voltage sensor measurements in volts.
    units = UNITVOLT
    
    default value = none none
    
    index = none 1-999
  - DISVOLn
```
public static final NOAOExt DISVOLn
```
    Disperser voltage sensor measurements in volts.
    units = UNITVOLT
    
    default value = none none
    
    index = none 1-999
  - DMEDIR
```
public static final NOAOExt DMEDIR
```
    Average wind direction measurements measured east of north over the sampling period inside the dome.
    units = UNITPA
    
    default value = none none
    
    index = none 1-999
  - DMEDIRn
```
public static final NOAOExt DMEDIRn
```
    Average wind direction measurements measured east of north over the sampling period inside the dome.
    units = UNITPA
    
    default value = none none
    
    index = none 1-999
  - DMEGUS
```
public static final NOAOExt DMEGUS
```
    Maximum wind speed over the sampling period inside the dome.
    units = UNITVEL
    
    default value = none none
    
    index = none 1-999
  - DMEGUSn
```
public static final NOAOExt DMEGUSn
```
    Maximum wind speed over the sampling period inside the dome.
    units = UNITVEL
    
    default value = none none
    
    index = none 1-999
  - DMEMJD
```
public static final NOAOExt DMEMJD
```
    Times for the dome environment measurements given as modified Julian. For the wind measurements this is the start of the sampling period.
    units = 'd'
    
    default value = MJDHDR DMEMJD
    
    index = none 1-999
  - DMEMJDn
```
public static final NOAOExt DMEMJDn
```
    Times for the dome environment measurements given as modified Julian. For the wind measurements this is the start of the sampling period.
    units = 'd'
    
    default value = MJDHDR DMEMJD
    
    index = none 1-999
  - DMEPER
```
public static final NOAOExt DMEPER
```
    Wind sampling period for the wind measurements inside the dome. If no value is given then the measurements are assumed to be 'instantaneous'.
    units = UNITTIME
    
    default value = none none
    
    index = none 1-999
  - DMEPERn
```
public static final NOAOExt DMEPERn
```
    Wind sampling period for the wind measurements inside the dome. If no value is given then the measurements are assumed to be 'instantaneous'.
    units = UNITTIME
    
    default value = none none
    
    index = none 1-999
  - DMETEM
```
public static final NOAOExt DMETEM
```
    Temperatures Celsius inside the dome.
    units = UNITTEMP
    
    default value = none none
    
    index = none 1-999
  - DMETEMn
```
public static final NOAOExt DMETEMn
```
    Temperatures Celsius inside the dome.
    units = UNITTEMP
    
    default value = none none
    
    index = none 1-999
  - DMEWIN
```
public static final NOAOExt DMEWIN
```
    Average wind speeds over the sampling period inside the dome.
    units = UNITVEL
    
    default value = none none
    
    index = none 1-999
  - DMEWINn
```
public static final NOAOExt DMEWINn
```
    Average wind speeds over the sampling period inside the dome.
    units = UNITVEL
    
    default value = none none
    
    index = none 1-999
  - DOMMJD
```
public static final NOAOExt DOMMJD
```
    Times for the dome sensor measurements given as modified Julian dates.
    units = 'd'
    
    default value = MJDHDR DOMMJD
    
    index = none 1-999
  - DOMMJDn
```
public static final NOAOExt DOMMJDn
```
    Times for the dome sensor measurements given as modified Julian dates.
    units = 'd'
    
    default value = MJDHDR DOMMJD
    
    index = none 1-999
  - DOMPAN
```
public static final NOAOExt DOMPAN
```
    Dome position angle sensor measurements. This should be in degrees east of north for the center of the dome slit.
    default value = none none
    
    index = none 1-999
  - DOMPANn
```
public static final NOAOExt DOMPANn
```
    Dome position angle sensor measurements. This should be in degrees east of north for the center of the dome slit.
    default value = none none
    
    index = none 1-999
  - DOMPOS
```
public static final NOAOExt DOMPOS
```
    Dome linear position sensor measurements in appropriate units.
    default value = none none
    
    index = none 1-999
  - DOMPOSn
```
public static final NOAOExt DOMPOSn
```
    Dome linear position sensor measurements in appropriate units.
    default value = none none
    
    index = none 1-999
  - DOMPRE
```
public static final NOAOExt DOMPRE
```
    Dome pressure sensor measurements in appropriate units.
    units = UNITPRES
    
    default value = none none
    
    index = none 1-999
  - DOMPREn
```
public static final NOAOExt DOMPREn
```
    Dome pressure sensor measurements in appropriate units.
    units = UNITPRES
    
    default value = none none
    
    index = none 1-999
  - DOMSTAT
```
public static final NOAOExt DOMSTAT
```
    Dome status.
    default value = none
    
    index = none
  - DOMTEM
```
public static final NOAOExt DOMTEM
```
    Dome temperature sensor measurements in degrees Celsius.
    units = UNITTEMP
    
    default value = none none
    
    index = none 1-999
  - DOMTEMn
```
public static final NOAOExt DOMTEMn
```
    Dome temperature sensor measurements in degrees Celsius.
    units = UNITTEMP
    
    default value = none none
    
    index = none 1-999
  - DOMVOL
```
public static final NOAOExt DOMVOL
```
    Dome voltage sensor measurements in volts.
    units = UNITVOLT
    
    default value = none none
    
    index = none 1-999
  - DOMVOLn
```
public static final NOAOExt DOMVOLn
```
    Dome voltage sensor measurements in volts.
    units = UNITVOLT
    
    default value = none none
    
    index = none 1-999
  - DTMn_n
```
public static final NOAOExt DTMn_n
```
    Transformation matrix between CCD and detector coordinates. If missing the default is an identify matrix.
    default value = 0.(i!=j),1.(i=j)
    
    index = 1-9,1-9
  - DTVn
```
public static final NOAOExt DTVn
```
    Transformation origin vector between CCD and detector coordinates.
    default value = 0.
    
    index = 1-9
  - ENVDIR
```
public static final NOAOExt ENVDIR
```
    Average wind direction measurements measured east of north over the sampling period outside the dome at times given by ENVMJDn keywords.
    units = UNITPA
    
    default value = none none
    
    index = none 1-999
  - ENVDIRn
```
public static final NOAOExt ENVDIRn
```
    Average wind direction measurements measured east of north over the sampling period outside the dome at times given by ENVMJDn keywords.
    units = UNITPA
    
    default value = none none
    
    index = none 1-999
  - ENVGUS
```
public static final NOAOExt ENVGUS
```
    Maximum wind speed in km/s over the sampling period outside the dome at times given by ENVMJDn keywords.
    units = UNITVEL
    
    default value = none none
    
    index = none 1-999
  - ENVGUSn
```
public static final NOAOExt ENVGUSn
```
    Maximum wind speed in km/s over the sampling period outside the dome at times given by ENVMJDn keywords.
    units = UNITVEL
    
    default value = none none
    
    index = none 1-999
  - ENVHUM
```
public static final NOAOExt ENVHUM
```
    Relative humidity measurements at times given by ENVMJDn keywords.
    units = '%'
    
    default value = none none
    
    index = none 1-999
  - ENVHUMn
```
public static final NOAOExt ENVHUMn
```
    Relative humidity measurements at times given by ENVMJDn keywords.
    units = '%'
    
    default value = none none
    
    index = none 1-999
  - ENVMJD
```
public static final NOAOExt ENVMJD
```
    Times for the site environment measurements given as modified Julian. For the wind measurements this is the start of the sampling period.
    units = 'd'
    
    default value = MJDHDR ENVMJD
    
    index = none 1-999
  - ENVMJDn
```
public static final NOAOExt ENVMJDn
```
    Times for the site environment measurements given as modified Julian. For the wind measurements this is the start of the sampling period.
    units = 'd'
    
    default value = MJDHDR ENVMJD
    
    index = none 1-999
  - ENVPER
```
public static final NOAOExt ENVPER
```
    Wind sampling period for the wind measurements outside the dome at times given by ENVMJDn keywords. If no value is given then the measurements are assumed to be 'instantaneous'.
    units = UNITTIME
    
    default value = none none
    
    index = none 1-999
  - ENVPERn
```
public static final NOAOExt ENVPERn
```
    Wind sampling period for the wind measurements outside the dome at times given by ENVMJDn keywords. If no value is given then the measurements are assumed to be 'instantaneous'.
    units = UNITTIME
    
    default value = none none
    
    index = none 1-999
  - ENVPRE
```
public static final NOAOExt ENVPRE
```
    Atmospheric pressure measurements at times given by ENVMJDn keywords.
    units = UNITPRES
    
    default value = none none
    
    index = none 1-999
  - ENVPREn
```
public static final NOAOExt ENVPREn
```
    Atmospheric pressure measurements at times given by ENVMJDn keywords.
    units = UNITPRES
    
    default value = none none
    
    index = none 1-999
  - ENVTEM
```
public static final NOAOExt ENVTEM
```
    Temperatures outside the dome at times given by ENVMJDn keywords.
    units = UNITTEMP
    
    default value = none none
    
    index = none 1-999
  - ENVTEMn
```
public static final NOAOExt ENVTEMn
```
    Temperatures outside the dome at times given by ENVMJDn keywords.
    units = UNITTEMP
    
    default value = none none
    
    index = none 1-999
  - ENVWAT
```
public static final NOAOExt ENVWAT
```
    Precipitable water vapor measurements at times given by ENVMJDn keywords.
    units = 'mm'
    
    default value = none none
    
    index = none 1-999
  - ENVWATn
```
public static final NOAOExt ENVWATn
```
    Precipitable water vapor measurements at times given by ENVMJDn keywords.
    units = 'mm'
    
    default value = none none
    
    index = none 1-999
  - ENVWIN
```
public static final NOAOExt ENVWIN
```
    Average wind speeds over the sampling period outside the dome at times given by ENVMJDn keywords.
    units = UNITVEL
    
    default value = none none
    
    index = none 1-999
  - ENVWINn
```
public static final NOAOExt ENVWINn
```
    Average wind speeds over the sampling period outside the dome at times given by ENVMJDn keywords.
    units = UNITVEL
    
    default value = none none
    
    index = none 1-999
  - ERRORnnn
```
public static final NOAOExt ERRORnnn
```
    Error information. The sequence numbers are used to order the information.
    default value = none
    
    index = 1-999
  - EXPREQ
```
public static final NOAOExt EXPREQ
```
    Requested exposure time of the observation.
    units = UNITTIME
    
    default value = EXPTIME
    
    index = none
  - FIBER
```
public static final NOAOExt FIBER
```
    Fiber identification for the fiber(s). The string consists of a fiber number, an object type number (0=sky, 1=object, etc.), the right ascension and declination, and the object name or title. This can replace OBJNAME, APRA/OBJRA, and APDEC/OBJDEC.
    default value = none none
    
    index = none 1-9999
  - FIBnnn
```
public static final NOAOExt FIBnnn
```
    Fiber identification for the fiber(s). The string consists of a fiber number, an object type number (0=sky, 1=object, etc.), the right ascension and declination, and the object name or title. This can replace OBJNAME, APRA/OBJRA, and APDEC/OBJDEC.
    default value = none none
    
    index = none 1-9999
  - FILPOS
```
public static final NOAOExt FILPOS
```
    Filter position given as filter wheel number or other filter system position measurement.
    units = 'instrumental'
    
    default value = none none
    
    index = none 1-999
  - FILPOSn
```
public static final NOAOExt FILPOSn
```
    Filter position given as filter wheel number or other filter system position measurement.
    units = 'instrumental'
    
    default value = none none
    
    index = none 1-999
  - FILTYP
```
public static final NOAOExt FILTYP
```
    Filter type. This is the technical specification or observatory identification name.
    default value = none none
    
    index = none 1-999
  - FILTYPn
```
public static final NOAOExt FILTYPn
```
    Filter type. This is the technical specification or observatory identification name.
    default value = none none
    
    index = none 1-999
  - FOCNEXPO
```
public static final NOAOExt FOCNEXPO
```
    Number of focus exposures in a focus sequence.
    default value = none
    
    index = none
  - FOCSHIFT
```
public static final NOAOExt FOCSHIFT
```
    Pixel shift on the detector between exposures in a focus sequence.
    units = 'pixel'
    
    default value = none
    
    index = none
  - FOCSTART
```
public static final NOAOExt FOCSTART
```
    Starting focus value in focus sequence.
    units = 'instrumental'
    
    default value = none
    
    index = none
  - FOCSTEP
```
public static final NOAOExt FOCSTEP
```
    Focus increment step in focus sequence.
    units = 'instrumental'
    
    default value = none
    
    index = none
  - GAIN
```
public static final NOAOExt GAIN
```
    Amplifier gain in electrons per analog unit. This is the most current estimate of the gain.
    units = 'e/count'
    
    default value = none
    
    index = none
  - GTV
```
public static final NOAOExt GTV
```
    Guider TV name.
    default value = TV
    
    index = none
  - GTVFIL
```
public static final NOAOExt GTVFIL
```
    Guider TV filter names. This name is the astronomical standard name if applicable; i.e. U, B, Gunn I, etc. The filter type and filter device position are given by other keywords.
    default value = TVFILT GTVFIL
    
    index = none 1-999
  - GTVFILn
```
public static final NOAOExt GTVFILn
```
    Guider TV filter names. This name is the astronomical standard name if applicable; i.e. U, B, Gunn I, etc. The filter type and filter device position are given by other keywords.
    default value = TVFILT GTVFIL
    
    index = none 1-999
  - GTVFPO
```
public static final NOAOExt GTVFPO
```
    Guider TV filter position given as filter wheel number or other filter system position measurement.
    units = 'instrumental'
    
    default value = TVFPOS TVFPO%d
    
    index = none 1-999
  - GTVFPOn
```
public static final NOAOExt GTVFPOn
```
    Guider TV filter position given as filter wheel number or other filter system position measurement.
    units = 'instrumental'
    
    default value = TVFPOS TVFPO%d
    
    index = none 1-999
  - GTVFTY
```
public static final NOAOExt GTVFTY
```
    Guider TV filter type. This is the technical specification or observatory identification name.
    default value = TVFTYP TVFTYP%d
    
    index = none 1-999
  - GTVFTYn
```
public static final NOAOExt GTVFTYn
```
    Guider TV filter type. This is the technical specification or observatory identification name.
    default value = TVFTYP TVFTYP%d
    
    index = none 1-999
  - GTVHWV
```
public static final NOAOExt GTVHWV
```
    Guider TV identification and hardware version.
    default value = TVHWV
    
    index = none
  - GTVMJD
```
public static final NOAOExt GTVMJD
```
    Times for the guider television sensor measurements given as modified Julian dates.
    units = 'd'
    
    default value = TVMJD%d none
    
    index = none 1-999
  - GTVMJDn
```
public static final NOAOExt GTVMJDn
```
    Times for the guider television sensor measurements given as modified Julian dates.
    units = 'd'
    
    default value = TVMJD%d none
    
    index = none 1-999
  - GTVPAN
```
public static final NOAOExt GTVPAN
```
    Guider television position angle measurements in appropriate units.
    default value = TVPAN TVPAN%d
    
    index = none 1-999
  - GTVPANn
```
public static final NOAOExt GTVPANn
```
    Guider television position angle measurements in appropriate units.
    default value = TVPAN TVPAN%d
    
    index = none 1-999
  - GTVPOS
```
public static final NOAOExt GTVPOS
```
    Guider television linear position sensor measurements in appropriate units.
    default value = TVPOS TVPOS%d
    
    index = none 1-999
  - GTVPOSn
```
public static final NOAOExt GTVPOSn
```
    Guider television linear position sensor measurements in appropriate units.
    default value = TVPOS TVPOS%d
    
    index = none 1-999
  - GTVPRE
```
public static final NOAOExt GTVPRE
```
    Guider television pressure sensor measurements in appropriate units.
    units = UNITPRES
    
    default value = TVPRE TVPRE%d
    
    index = none 1-999
  - GTVPREn
```
public static final NOAOExt GTVPREn
```
    Guider television pressure sensor measurements in appropriate units.
    units = UNITPRES
    
    default value = TVPRE TVPRE%d
    
    index = none 1-999
  - GTVSTAT
```
public static final NOAOExt GTVSTAT
```
    Guider TV status.
    default value = TVSTAT
    
    index = none
  - GTVSWV
```
public static final NOAOExt GTVSWV
```
    Guider TV software version.
    default value = TVSWV
    
    index = none
  - GTVTEM
```
public static final NOAOExt GTVTEM
```
    Guider television temperature sensor measurements in degrees Celsius.
    units = UNITTEMP
    
    default value = TVTEMP TVTEMP%d
    
    index = none 1-999
  - GTVTEMn
```
public static final NOAOExt GTVTEMn
```
    Guider television temperature sensor measurements in degrees Celsius.
    units = UNITTEMP
    
    default value = TVTEMP TVTEMP%d
    
    index = none 1-999
  - GTVVOL
```
public static final NOAOExt GTVVOL
```
    Guider television voltage sensor measurements in volts.
    units = UNITVOLT
    
    default value = TVVOL TVVOL%d
    
    index = none 1-999
  - GTVVOLn
```
public static final NOAOExt GTVVOLn
```
    Guider television voltage sensor measurements in volts.
    units = UNITVOLT
    
    default value = TVVOL TVVOL%d
    
    index = none 1-999
  - GUIDEC
```
public static final NOAOExt GUIDEC
```
    Guide object declination.
    units = GUIDECU
    
    default value = none
    
    index = none
  - GUIDECU
```
public static final NOAOExt GUIDECU
```
    Declination unit.
    default value = none
    
    index = none
  - GUIDEHWV
```
public static final NOAOExt GUIDEHWV
```
    Guider identification and hardware version.
    default value = none
    
    index = none
  - GUIDER
```
public static final NOAOExt GUIDER
```
    Guider name. Two of the names are 'manual' and 'none' for manual guiding or no guider, respectively.
    default value = none
    
    index = none
  - GUIDESWV
```
public static final NOAOExt GUIDESWV
```
    Guider software version.
    default value = none
    
    index = none
  - GUIEPOCH
```
public static final NOAOExt GUIEPOCH
```
    Epoch of the guide object coordinates.
    default value = TELEPOCH
    
    index = none
  - GUIEQUIN
```
public static final NOAOExt GUIEQUIN
```
    Guide object coordinate system equinox. A value before 1984 is Besselian otherwise it is Julian.
    default value = TELEQUIN
    
    index = none
  - GUIMJD
```
public static final NOAOExt GUIMJD
```
    Times for the guider sensor measurements given as modified Julian dates.
    units = 'd'
    
    default value = MJDHDR GUIMJD
    
    index = none 1-999
  - GUIMJDn
```
public static final NOAOExt GUIMJDn
```
    Times for the guider sensor measurements given as modified Julian dates.
    units = 'd'
    
    default value = MJDHDR GUIMJD
    
    index = none 1-999
  - GUIPAN
```
public static final NOAOExt GUIPAN
```
    Guider position angle measurements in appropriate units.
    default value = none none
    
    index = none 1-999
  - GUIPANn
```
public static final NOAOExt GUIPANn
```
    Guider position angle measurements in appropriate units.
    default value = none none
    
    index = none 1-999
  - GUIPOS
```
public static final NOAOExt GUIPOS
```
    Guider linear position sensor measurements in appropriate units. This might be used for guide probe positions.
    default value = none none
    
    index = none 1-999
  - GUIPOSn
```
public static final NOAOExt GUIPOSn
```
    Guider linear position sensor measurements in appropriate units. This might be used for guide probe positions.
    default value = none none
    
    index = none 1-999
  - GUIPRE
```
public static final NOAOExt GUIPRE
```
    Guider pressure sensor measurements in appropriate units.
    units = UNITPRES
    
    default value = none none
    
    index = none 1-999
  - GUIPREn
```
public static final NOAOExt GUIPREn
```
    Guider pressure sensor measurements in appropriate units.
    units = UNITPRES
    
    default value = none none
    
    index = none 1-999
  - GUIRA
```
public static final NOAOExt GUIRA
```
    Guide object right ascension.
    units = GUIRAU
    
    default value = none
    
    index = none
  - GUIRADEC
```
public static final NOAOExt GUIRADEC
```
    Guide object coordinate system type.
    default value = TELRADEC
    
    index = none
  - GUIRATE
```
public static final NOAOExt GUIRATE
```
    Guider correction rate.
    units = UNITFREQ
    
    default value = none
    
    index = none
  - GUIRAU
```
public static final NOAOExt GUIRAU
```
    Right ascension unit.
    default value = none
    
    index = none
  - GUISTAT
```
public static final NOAOExt GUISTAT
```
    Guider status.
    default value = none
    
    index = none
  - GUITEM
```
public static final NOAOExt GUITEM
```
    Guider temperature sensor measurements in degrees Celsius.
    units = UNITTEMP
    
    default value = none none
    
    index = none 1-999
  - GUITEMn
```
public static final NOAOExt GUITEMn
```
    Guider temperature sensor measurements in degrees Celsius.
    units = UNITTEMP
    
    default value = none none
    
    index = none 1-999
  - GUIVOL
```
public static final NOAOExt GUIVOL
```
    Guider voltage sensor measurements in volts.
    units = UNITVOLT
    
    default value = none none
    
    index = none 1-999
  - GUIVOLn
```
public static final NOAOExt GUIVOLn
```
    Guider voltage sensor measurements in volts.
    units = UNITVOLT
    
    default value = none none
    
    index = none 1-999
  - HA
```
public static final NOAOExt HA
```
    Hour angle at TELMJD.
    units = UNITRA
    
    default value = none
    
    index = none
  - IMAGEHWV
```
public static final NOAOExt IMAGEHWV
```
    Image creation system hardware version.
    default value = none
    
    index = none
  - IMAGEID
```
public static final NOAOExt IMAGEID
```
    The image identification when there are multiple images within an observation. For detectors with CCDs this would be a unique number assigned to each amplifier in the detector.
    default value = none
    
    index = none
  - IMAGESWV
```
public static final NOAOExt IMAGESWV
```
    Image creation system software version.
    default value = none
    
    index = none
  - INSFOCUS
```
public static final NOAOExt INSFOCUS
```
    Instrument focus.
    units = 'instrumental'
    
    default value = none
    
    index = none
  - INSMJD
```
public static final NOAOExt INSMJD
```
    Times for the instrument sensor measurements given as modified Julian dates.
    units = 'd'
    
    default value = MJD-OBS INSMJD
    
    index = none 1-999
  - INSMJDn
```
public static final NOAOExt INSMJDn
```
    Times for the instrument sensor measurements given as modified Julian dates.
    units = 'd'
    
    default value = MJD-OBS INSMJD
    
    index = none 1-999
  - INSPAN
```
public static final NOAOExt INSPAN
```
    Instrument position angle measurements in appropriate units.
    default value = none none
    
    index = none 1-999
  - INSPANn
```
public static final NOAOExt INSPANn
```
    Instrument position angle measurements in appropriate units.
    default value = none none
    
    index = none 1-999
  - INSPOS
```
public static final NOAOExt INSPOS
```
    Instrument linear position sensor measurements in appropriate units.
    default value = none none
    
    index = none 1-999
  - INSPOSn
```
public static final NOAOExt INSPOSn
```
    Instrument linear position sensor measurements in appropriate units.
    default value = none none
    
    index = none 1-999
  - INSPRE
```
public static final NOAOExt INSPRE
```
    Instrument pressure sensor measurements in appropriate units.
    units = UNITPRES
    
    default value = none none
    
    index = none 1-999
  - INSPREn
```
public static final NOAOExt INSPREn
```
    Instrument pressure sensor measurements in appropriate units.
    units = UNITPRES
    
    default value = none none
    
    index = none 1-999
  - INSSTAT
```
public static final NOAOExt INSSTAT
```
    Instrument status.
    default value = none
    
    index = none
  - INSTCONF
```
public static final NOAOExt INSTCONF
```
    Instrument configuration.
    default value = none
    
    index = none
  - INSTEM
```
public static final NOAOExt INSTEM
```
    Instrument temperature sensor measurements in degrees Celsius.
    units = UNITTEMP
    
    default value = none none
    
    index = none 1-999
  - INSTEMn
```
public static final NOAOExt INSTEMn
```
    Instrument temperature sensor measurements in degrees Celsius.
    units = UNITTEMP
    
    default value = none none
    
    index = none 1-999
  - INSTHWV
```
public static final NOAOExt INSTHWV
```
    Instrument hardware version.
    default value = none
    
    index = none
  - INSTSWV
```
public static final NOAOExt INSTSWV
```
    Instrument software version. ------------------------------------------------------------------
    default value = none
    
    index = none
  - INSVOL
```
public static final NOAOExt INSVOL
```
    Instrument voltage sensor measurements in volts.
    units = UNITVOLT
    
    default value = none none
    
    index = none 1-999
  - INSVOLn
```
public static final NOAOExt INSVOLn
```
    Instrument voltage sensor measurements in volts.
    units = UNITVOLT
    
    default value = none none
    
    index = none 1-999
  - KWDICT
```
public static final NOAOExt KWDICT
```
    The keyword dictionary defining the keywords. This dictionary should be archived with the data.
    default value = none
    
    index = none
  - LAMP
```
public static final NOAOExt LAMP
```
    Calibration lamp name
    default value = none
    
    index = none
  - LAMPTYPE
```
public static final NOAOExt LAMPTYPE
```
    Calibration lamp type.
    default value = none
    
    index = none
  - LMPMJD
```
public static final NOAOExt LMPMJD
```
    Times for the lamp sensor measurements given as modified Julian dates. The MJDHDR keyword may be used for the time at which the image header is created or the MJD-OBS keyword may be used for the time of observation.
    units = 'd'
    
    default value = MJD-OBS LMPMJD
    
    index = none 1-999
  - LMPMJDn
```
public static final NOAOExt LMPMJDn
```
    Times for the lamp sensor measurements given as modified Julian dates. The MJDHDR keyword may be used for the time at which the image header is created or the MJD-OBS keyword may be used for the time of observation.
    units = 'd'
    
    default value = MJD-OBS LMPMJD
    
    index = none 1-999
  - LMPPAN
```
public static final NOAOExt LMPPAN
```
    Calibration lamp position angle measurements in appropriate units.
    default value = none none
    
    index = none 1-999
  - LMPPANn
```
public static final NOAOExt LMPPANn
```
    Calibration lamp position angle measurements in appropriate units.
    default value = none none
    
    index = none 1-999
  - LMPPOS
```
public static final NOAOExt LMPPOS
```
    Calibration lamp linear position sensor measurements in appropriate units.
    default value = none none
    
    index = none 1-999
  - LMPPOSn
```
public static final NOAOExt LMPPOSn
```
    Calibration lamp linear position sensor measurements in appropriate units.
    default value = none none
    
    index = none 1-999
  - LMPPRE
```
public static final NOAOExt LMPPRE
```
    Calibration lamp pressure sensor measurements in appropriate units.
    units = UNITPRES
    
    default value = none none
    
    index = none 1-999
  - LMPPREn
```
public static final NOAOExt LMPPREn
```
    Calibration lamp pressure sensor measurements in appropriate units.
    units = UNITPRES
    
    default value = none none
    
    index = none 1-999
  - LMPTEM
```
public static final NOAOExt LMPTEM
```
    Calibration lamp temperature sensor measurements in degrees Celsius.
    units = UNITTEMP
    
    default value = none none
    
    index = none 1-999
  - LMPTEMn
```
public static final NOAOExt LMPTEMn
```
    Calibration lamp temperature sensor measurements in degrees Celsius.
    units = UNITTEMP
    
    default value = none none
    
    index = none 1-999
  - LMPVOL
```
public static final NOAOExt LMPVOL
```
    Calibration lamp voltage sensor measurements in volts.
    units = UNITVOLT
    
    default value = none none
    
    index = none 1-999
  - LMPVOLn
```
public static final NOAOExt LMPVOLn
```
    Calibration lamp voltage sensor measurements in volts.
    units = UNITVOLT
    
    default value = none none
    
    index = none 1-999
  - LST_OBS
```
public static final NOAOExt LST_OBS
```
    Local siderial time at the start of the exposure.
    units = UNITHOUR
    
    default value = none
    
    index = none
  - LSTEND
```
public static final NOAOExt LSTEND
```
    Local siderial time at the end of the exposure.
    units = UNITHOUR
    
    default value = none
    
    index = none
  - LSTHDR
```
public static final NOAOExt LSTHDR
```
    Local siderial time of the header creation.
    units = UNITHOUR
    
    default value = LST-OBS
    
    index = none
  - LSTOBS
```
public static final NOAOExt LSTOBS
```
    Default local siderial time for the observation. This keyword is generally not used and is LST-OBS keyword for the start of the exposure on the detector is used.
    units = UNITHOUR
    
    default value = LST-OBS
    
    index = none
  - LTMn_n
```
public static final NOAOExt LTMn_n
```
    Transformation matrix between CCD and image coordinates. If missing the default is an identify matrix.
    default value = 0.(i!=j),1.(i=j)
    
    index = 1-9,1-9
  - LTVn
```
public static final NOAOExt LTVn
```
    Transformation origin vector between CCD and image coordinates.
    default value = 0.
    
    index = 1-9
  - MAXNSCAN
```
public static final NOAOExt MAXNSCAN
```
    The maximum number of scanned (unbinned) lines used to form an output line. This is used with drift scanning or a scan table. For long drift scans this will be the number of lines in the CCD.
    default value = none
    
    index = none
  - MINNSCAN
```
public static final NOAOExt MINNSCAN
```
    The minimum number of scanned (unbinned) lines used to form an output line. This is used with drift scanning or a scan table. This will only differ from MAXNSCAN if the initial lines in the output image are from the initial ramp-up.
    default value = MAXNSCAN
    
    index = none
  - MJDHDR
```
public static final NOAOExt MJDHDR
```
    Modified Julian date when the image header was created by the software. The fractional part of the date is given to better than a second of time. Many header keywords may be sampled or computed at this time and this keyword is the default for these.
    units = 'd'
    
    default value = MJD-OBS
    
    index = none
  - MJDOBS
```
public static final NOAOExt MJDOBS
```
    Default modified Julian date for the observation. The fractional part of the date is given to better than a second of time. This keyword is generally not used and is MJD-OBS keyword for the start of the exposure on the detector is used.
    units = 'd'
    
    default value = MJD-OBS
    
    index = none
  - NAMPS
```
public static final NOAOExt NAMPS
```
    The number of amplifiers in the detector. When there is only a single amplifier used it may be absent since the default value is 1.
    default value = 1
    
    index = none
  - NCCDS
```
public static final NOAOExt NCCDS
```
    The number of CCDs in the detector. This is used with mosaics of CCD detectors. For a single CCD it may be absent since the default value is 1.
    default value = 1
    
    index = none
  - NODANGLE
```
public static final NOAOExt NODANGLE
```
    default value = none
    
    index = none
  - NODDIST
```
public static final NOAOExt NODDIST
```
    default value = none
    
    index = none
  - NODFREQ
```
public static final NOAOExt NODFREQ
```
    default value = none
    
    index = none
  - NODHWV
```
public static final NOAOExt NODHWV
```
    default value = none
    
    index = none
  - NODMJD
```
public static final NOAOExt NODMJD
```
    Times for the nodding system sensor measurements given as modified Julian dates.
    units = 'd'
    
    default value = MJDHDR NODMJD
    
    index = none 1-999
  - NODMJDn
```
public static final NOAOExt NODMJDn
```
    Times for the nodding system sensor measurements given as modified Julian dates.
    units = 'd'
    
    default value = MJDHDR NODMJD
    
    index = none 1-999
  - NODNCHOP
```
public static final NOAOExt NODNCHOP
```
    default value = none
    
    index = none
  - NODPAN
```
public static final NOAOExt NODPAN
```
    Nodding position angle measurements in appropriate units. Note that NODANGLE should be used for the nodding angle and these keywords are for other system position angle measurements.
    default value = none none
    
    index = none 1-999
  - NODPANn
```
public static final NOAOExt NODPANn
```
    Nodding position angle measurements in appropriate units. Note that NODANGLE should be used for the nodding angle and these keywords are for other system position angle measurements.
    default value = none none
    
    index = none 1-999
  - NODPOS
```
public static final NOAOExt NODPOS
```
    Nodding system linear position sensor measurements in appropriate units.
    default value = none none
    
    index = none 1-999
  - NODPOSn
```
public static final NOAOExt NODPOSn
```
    Nodding system linear position sensor measurements in appropriate units.
    default value = none none
    
    index = none 1-999
  - NODPRE
```
public static final NOAOExt NODPRE
```
    Nodding system pressure sensor measurements in appropriate units.
    units = UNITPRES
    
    default value = none none
    
    index = none 1-999
  - NODPREn
```
public static final NOAOExt NODPREn
```
    Nodding system pressure sensor measurements in appropriate units.
    units = UNITPRES
    
    default value = none none
    
    index = none 1-999
  - NODSTAT
```
public static final NOAOExt NODSTAT
```
    default value = none
    
    index = none
  - NODSWV
```
public static final NOAOExt NODSWV
```
    default value = none
    
    index = none
  - NODTEM
```
public static final NOAOExt NODTEM
```
    Nodding system temperature sensor measurements in degrees Celsius.
    units = UNITTEMP
    
    default value = none none
    
    index = none 1-999
  - NODTEMn
```
public static final NOAOExt NODTEMn
```
    Nodding system temperature sensor measurements in degrees Celsius.
    units = UNITTEMP
    
    default value = none none
    
    index = none 1-999
  - NODVOL
```
public static final NOAOExt NODVOL
```
    Nodding system voltage sensor measurements in volts.
    units = UNITVOLT
    
    default value = none none
    
    index = none 1-999
  - NODVOLn
```
public static final NOAOExt NODVOLn
```
    Nodding system voltage sensor measurements in volts.
    units = UNITVOLT
    
    default value = none none
    
    index = none 1-999
  - NSUBEXPS
```
public static final NOAOExt NSUBEXPS
```
    Number of coadded subexposures. When charge shuffling this gives the number of charge shuffled exposures.
    default value = 1
    
    index = none
  - OBJDEC
```
public static final NOAOExt OBJDEC
```
    Declination of the target astronomical object(s).
    units = OBJDECU ODEU%d
    
    default value = DEC none
    
    index = none 1-9999
  - OBJDECU
```
public static final NOAOExt OBJDECU
```
    Declination unit.
    default value = DECUNIT OBJDECU
    
    index = none 1-9999
  - OBJEPOCH
```
public static final NOAOExt OBJEPOCH
```
    Epoch of the target astronomical object coordinate(s). This is given in years.
    units = 'yr'
    
    default value = EPOCH OBJEPOCH
    
    index = none 1-9999
  - OBJEQUIN
```
public static final NOAOExt OBJEQUIN
```
    Coordinate system equinox for the target astronomical object(s). A value before 1984 is Besselian otherwise it is Julian.
    units = 'yr'
    
    default value = EQUINOX OBJEQUIN
    
    index = none 1-9999
  - OBJnnn
```
public static final NOAOExt OBJnnn
```
    Standard reference or catalog name for the target astronomical object(s). The name should follow IAU standards. These keywords differ from the OBJECT keyword which is used to identify the observation.
    default value = OBJECT OBJNAME
    
    index = none 1-9999
  - OBJRA
```
public static final NOAOExt OBJRA
```
    Right ascension of the target astronomical object(s).
    units = OBJRAU ORAU%4d
    
    default value = RA none
    
    index = none 1-9999
  - OBJRADEC
```
public static final NOAOExt OBJRADEC
```
    Coordinate system type for the target astronomical object(s).
    default value = RADECSYS OBJRADEC
    
    index = none 1-9999
  - OBJRAU
```
public static final NOAOExt OBJRAU
```
    Right ascension unit.
    default value = RAUNIT OBJRAU
    
    index = none 1-9999
  - OBJTnnn
```
public static final NOAOExt OBJTnnn
```
    Type of target astronomical object(s). This is taken from a dictionary of names yet to be defined. Some common types are 'galaxy', 'star', and 'sky'. If not particular object is targeted the type 'field' may be used.
    default value = none OBJTYPE
    
    index = none 1-9999
  - OBJTYPE
```
public static final NOAOExt OBJTYPE
```
    Type of target astronomical object(s). This is taken from a dictionary of names yet to be defined. Some common types are 'galaxy', 'star', and 'sky'. If not particular object is targeted the type 'field' may be used.
    default value = none OBJTYPE
    
    index = none 1-9999
  - OBSDEC
```
public static final NOAOExt OBSDEC
```
    Declination of the observation. This may be distinct from the object coordinates and the telescope coordinates. It may be used to indicate the requested observation coordinates.
    units = OBSDECU
    
    default value = DETDEC
    
    index = none
  - OBSDECU
```
public static final NOAOExt OBSDECU
```
    Declination unit.
    default value = DETDECU
    
    index = none
  - OBSEPOCH
```
public static final NOAOExt OBSEPOCH
```
    Epoch of the coordinates used in observation coordinates.
    units = 'yr'
    
    default value = TELEPOCH
    
    index = none
  - OBSEQUIN
```
public static final NOAOExt OBSEQUIN
```
    Equinox of coordinates used in observation coordinates. A value before 1984 is Besselian otherwise it is Julian.
    units = 'yr'
    
    default value = TELEQUIN
    
    index = none
  - OBSERVAT
```
public static final NOAOExt OBSERVAT
```
    Observatory identification for the site of the observation.
    default value = none
    
    index = none
  - OBSID
```
public static final NOAOExt OBSID
```
    The unique observatory observation identification. This serves to identify all data from the same observation.
    default value = none
    
    index = none
  - OBSRA
```
public static final NOAOExt OBSRA
```
    Right ascension of the observation. This may be distinct from the object coordinates and the telescope coordinates. It may be used to indicate the requested observation coordinates.
    units = OBSRAU
    
    default value = DETRA
    
    index = none
  - OBSRADEC
```
public static final NOAOExt OBSRADEC
```
    Coordinate system used in observation coordinates.
    default value = TELRADEC
    
    index = none
  - OBSRAU
```
public static final NOAOExt OBSRAU
```
    Right ascension unit.
    default value = DETRAU
    
    index = none
  - OBSRVRnn
```
public static final NOAOExt OBSRVRnn
```
    Name(s) of the observers.
    default value = none none
    
    index = none 1-9999
  - OBSSTAT
```
public static final NOAOExt OBSSTAT
```
    Status of the observation. -----------------------------------------------------------------
    default value = none
    
    index = none
  - OBSTYPE
```
public static final NOAOExt OBSTYPE
```
    The type of observation such as an astronomical exposure or a particular type of calibration exposure.
    default value = none
    
    index = none
  - ODECnnn
```
public static final NOAOExt ODECnnn
```
    Declination of the target astronomical object(s).
    units = OBJDECU ODEU%d
    
    default value = DEC none
    
    index = none 1-9999
  - ODEUnnn
```
public static final NOAOExt ODEUnnn
```
    Declination unit.
    default value = DECUNIT OBJDECU
    
    index = none 1-9999
  - OEPOnnn
```
public static final NOAOExt OEPOnnn
```
    Epoch of the target astronomical object coordinate(s). This is given in years.
    units = 'yr'
    
    default value = EPOCH OBJEPOCH
    
    index = none 1-9999
  - OEQUnnn
```
public static final NOAOExt OEQUnnn
```
    Coordinate system equinox for the target astronomical object(s). A value before 1984 is Besselian otherwise it is Julian.
    units = 'yr'
    
    default value = EQUINOX OBJEQUIN
    
    index = none 1-9999
  - ORAnnn
```
public static final NOAOExt ORAnnn
```
    Right ascension of the target astronomical object(s).
    units = OBJRAU ORAU%4d
    
    default value = RA none
    
    index = none 1-9999
  - ORAUnnn
```
public static final NOAOExt ORAUnnn
```
    Right ascension unit.
    default value = RAUNIT OBJRAU
    
    index = none 1-9999
  - ORDSnnn
```
public static final NOAOExt ORDSnnn
```
    Coordinate system type for the target astronomical object(s).
    default value = RADECSYS OBJRADEC
    
    index = none 1-9999
  - PHOTCAL
```
public static final NOAOExt PHOTCAL
```
    Status of calibration to data proportional to photons. For CCD data this means bias section correction, zero level calibration, dark count calibration, and flat field calibration.
    default value = F
    
    index = none
  - PHOTOMET
```
public static final NOAOExt PHOTOMET
```
    Photometric conditions during the observation.
    default value = none
    
    index = none
  - PIPEHW
```
public static final NOAOExt PIPEHW
```
    Processing hardware used.
    default value = none none
    
    index = none 1-99
  - PIPEHWn
```
public static final NOAOExt PIPEHWn
```
    Processing hardware used.
    default value = none none
    
    index = none 1-99
  - PIPELINE
```
public static final NOAOExt PIPELINE
```
    Name of processing pipeline applied.
    default value = none
    
    index = none
  - PIPESW
```
public static final NOAOExt PIPESW
```
    Processing software version.
    default value = none none
    
    index = none 1-99
  - PIPESWn
```
public static final NOAOExt PIPESWn
```
    Processing software version.
    default value = none none
    
    index = none 1-99
  - PIXSCALn
```
public static final NOAOExt PIXSCALn
```
    Projected pixel scale along axis n.
    units = UNITSEP/pixel
    
    default value = none
    
    index = 1-9
  - PIXSIZEn
```
public static final NOAOExt PIXSIZEn
```
    Unbinned pixel size along each dimension given in appropriate units. The units should be indicated in the comment. The projected pixel size in arc seconds or wavelength are given by other parameters.
    units = 'um'
    
    default value = none
    
    index = 1-9
  - PMAX1
```
public static final NOAOExt PMAX1
```
    Pixel limit for region occupied by the spectrum.
    units = 'pixel' 'pixel'
    
    default value = none PMAX1
    
    index = none 1-9999
  - PMAX2
```
public static final NOAOExt PMAX2
```
    Pixel limit for region occupied by the spectrum.
    units = 'pixel' 'pixel'
    
    default value = none PMAX2
    
    index = none 1-9999
  - PMIN1
```
public static final NOAOExt PMIN1
```
    Pixel limit for region occupied by the spectrum.
    units = 'pixel' 'pixel'
    
    default value = none PMIN1
    
    index = none 1-9999
  - PMIN2
```
public static final NOAOExt PMIN2
```
    Pixel limit for region occupied by the spectrum.
    units = 'pixel' 'pixel'
    
    default value = none CMIN2
    
    index = none 1-9999
  - PMN1nnn
```
public static final NOAOExt PMN1nnn
```
    Pixel limit for region occupied by the spectrum.
    units = 'pixel' 'pixel'
    
    default value = none PMIN1
    
    index = none 1-9999
  - PMN2n
```
public static final NOAOExt PMN2n
```
    Pixel limit for region occupied by the spectrum.
    units = 'pixel' 'pixel'
    
    default value = none CMIN2
    
    index = none 1-9999
  - PMX1n
```
public static final NOAOExt PMX1n
```
    Pixel limit for region occupied by the spectrum.
    units = 'pixel' 'pixel'
    
    default value = none PMAX1
    
    index = none 1-9999
  - PMX2n
```
public static final NOAOExt PMX2n
```
    Pixel limit for region occupied by the spectrum.
    units = 'pixel' 'pixel'
    
    default value = none PMAX2
    
    index = none 1-9999
  - PREFLASH
```
public static final NOAOExt PREFLASH
```
    CCD preflash time. If the times in the extension are different the primary HDU gives one of the extension times.
    units = UNITTIME
    
    default value = 0.
    
    index = none
  - PROCnnn
```
public static final NOAOExt PROCnnn
```
    Processing log information formatted as FITS comments.
    default value = none
    
    index = 1-9999
  - PROCSTAT
```
public static final NOAOExt PROCSTAT
```
    Processing status.
    default value = none
    
    index = none
  - PROPID
```
public static final NOAOExt PROPID
```
    The unique observatory proposal identification.
    default value = none
    
    index = none
  - PROPOSAL
```
public static final NOAOExt PROPOSAL
```
    The name or title of the proposal.
    default value = none
    
    index = none
  - PROPOSER
```
public static final NOAOExt PROPOSER
```
    Name(s) of the proposers.
    default value = none none
    
    index = none 1-9999
  - PROPSRnn
```
public static final NOAOExt PROPSRnn
```
    Name(s) of the proposers.
    default value = none none
    
    index = none 1-9999
  - RADECEQ
```
public static final NOAOExt RADECEQ
```
    Default coordinate system equinox. A value before 1984 is Besselian otherwise it is Julian. If absent the default is J2000.
    units = 'yr'
    
    default value = 2000.
    
    index = none
  - RAPANGL
```
public static final NOAOExt RAPANGL
```
    Projected position angle of the positive right ascension axis on the detector. The position angle is measured clockwise from the image y axis.
    units = UNITPA
    
    default value = none
    
    index = none
  - RAUNIT
```
public static final NOAOExt RAUNIT
```
    Default right ascension units.
    default value = UNITRA
    
    index = none
  - RDNOISE
```
public static final NOAOExt RDNOISE
```
    CCD readout noise in rms electrons. This is the most current estimate.
    units = 'e'
    
    default value = none
    
    index = none
  - READTIME
```
public static final NOAOExt READTIME
```
    Amplifier unbinned pixel read time.
    units = 'ns'
    
    default value = none none
    
    index = none none
  - RECNO
```
public static final NOAOExt RECNO
```
    Archive identification. This may be the same as the observation identification.
    default value = OBSID none
    
    index = none none
  - SEEING
```
public static final NOAOExt SEEING
```
    Seeing estimates specified as the stellar full-width at half-maximum in arc seconds. There may be more than one estimate. The times of the estimates are given by the SEEMJDn keyword.
    units = UNITSEP
    
    default value = none none
    
    index = none 1-999
  - SEEINGn
```
public static final NOAOExt SEEINGn
```
    Seeing estimates specified as the stellar full-width at half-maximum in arc seconds. There may be more than one estimate. The times of the estimates are given by the SEEMJDn keyword.
    units = UNITSEP
    
    default value = none none
    
    index = none 1-999
  - SEEMJD
```
public static final NOAOExt SEEMJD
```
    Times for the seeing estimates given as modified Julian dates.
    units = 'd'
    
    default value = MJDHDR SEEMJD
    
    index = none 1-999
  - SEEMJDn
```
public static final NOAOExt SEEMJDn
```
    Times for the seeing estimates given as modified Julian dates.
    units = 'd'
    
    default value = MJDHDR SEEMJD
    
    index = none 1-999
  - SEXP
```
public static final NOAOExt SEXP
```
    Exposure time of the nth subexposure. If all subexposures are the same length then only the first keyword, SEXP, is needed. For charge shuffling the subexposure time is the total time for each charge shuffled exposure. There is no finer division of the exposure times. Comments would be used to describe the subexposures of each charge shuffled subexposure.
    units = UNITTIME
    
    default value = none SEXP
    
    index = none 1-9999
  - SEXPnnn
```
public static final NOAOExt SEXPnnn
```
    Exposure time of the nth subexposure. If all subexposures are the same length then only the first keyword, SEXP, is needed. For charge shuffling the subexposure time is the total time for each charge shuffled exposure. There is no finer division of the exposure times. Comments would be used to describe the subexposures of each charge shuffled subexposure.
    units = UNITTIME
    
    default value = none SEXP
    
    index = none 1-9999
  - SHUTCLOS
```
public static final NOAOExt SHUTCLOS
```
    Time for the shutter to close fully.
    units = 'ms'
    
    default value = none
    
    index = none
  - SHUTHWV
```
public static final NOAOExt SHUTHWV
```
    Shutter identification and hardware version.
    default value = none
    
    index = none
  - SHUTOPEN
```
public static final NOAOExt SHUTOPEN
```
    Time for the shutter to open fully.
    units = 'ms'
    
    default value = none
    
    index = none
  - SHUTSTAT
```
public static final NOAOExt SHUTSTAT
```
    Shutter status.
    default value = none
    
    index = none
  - SHUTSWV
```
public static final NOAOExt SHUTSWV
```
    Shutter software version.
    default value = none
    
    index = none
  - SLIT
```
public static final NOAOExt SLIT
```
    Slit or mask hole identification for the aperture(s). The string consists of a number, an object type number (0=sky, 1=object, etc.), the right ascension and declination, and the object name or title. declination, and the object name or title. This can replace OBJNAME, APRA/OBJRA, and APDEC/OBJDEC.
    default value = none none
    
    index = none 1-9999
  - SLITnnn
```
public static final NOAOExt SLITnnn
```
    Slit or mask hole identification for the aperture(s). The string consists of a number, an object type number (0=sky, 1=object, etc.), the right ascension and declination, and the object name or title. declination, and the object name or title. This can replace OBJNAME, APRA/OBJRA, and APDEC/OBJDEC.
    default value = none none
    
    index = none 1-9999
  - SPECFWHM
```
public static final NOAOExt SPECFWHM
```
    FWHM of the object spectrum profile on the detector. The width is in the units of the spatial world coordinate system. This may be approximate. It is particularly useful for specifying the profile width of fiber fed spectra.
    units = CUNIT2 CUN2%4d
    
    default value = none SPECFWHM
    
    index = none 1-9999
  - SUT
```
public static final NOAOExt SUT
```
    UTC of the start of each subexposure.
    units = UNITHOUR
    
    default value = none SUT
    
    index = none 1-9999
  - SUTn
```
public static final NOAOExt SUTn
```
    UTC of the start of each subexposure.
    units = UNITHOUR
    
    default value = none SUT
    
    index = none 1-9999
  - SWIDnnn
```
public static final NOAOExt SWIDnnn
```
    FWHM of the object spectrum profile on the detector. The width is in the units of the spatial world coordinate system. This may be approximate. It is particularly useful for specifying the profile width of fiber fed spectra.
    units = CUNIT2 CUN2%4d
    
    default value = none SPECFWHM
    
    index = none 1-9999
  - TELAAMJD
```
public static final NOAOExt TELAAMJD
```
    Modified Julian date at the time of the altitude/azimuth keywords.
    units = 'd'
    
    default value = MJDHDR
    
    index = none
  - TELALT
```
public static final NOAOExt TELALT
```
    Telescope pointing altitude at the time given by TELAAMJD.
    units = UNITALT
    
    default value = none
    
    index = none
  - TELAZ
```
public static final NOAOExt TELAZ
```
    Telescope pointing azimuth at the time given by TELAAMJD.
    units = UNITAZ
    
    default value = none
    
    index = none
  - TELCONF
```
public static final NOAOExt TELCONF
```
    Telescope configuration. The configuration defines the mirrors, correctors, light paths, etc.
    default value = none
    
    index = none
  - TELDEC
```
public static final NOAOExt TELDEC
```
    Telescope pointing declination.
    units = TELDECU
    
    default value = DEC
    
    index = none
  - TELDECU
```
public static final NOAOExt TELDECU
```
    Declination unit.
    default value = DECUNIT
    
    index = none
  - TELEPOCH
```
public static final NOAOExt TELEPOCH
```
    Telescope pointing coordinate epoch.
    units = 'yr'
    
    default value = EPOCH
    
    index = none
  - TELEQUIN
```
public static final NOAOExt TELEQUIN
```
    Telescope pointing coordinate system equinox. A value before 1984 is Besselian otherwise it is Julian.
    units = 'yr'
    
    default value = EQUINOX
    
    index = none
  - TELFOCUS
```
public static final NOAOExt TELFOCUS
```
    Telescope focus value in available units.
    units = 'instrumental'
    
    default value = none
    
    index = none
  - TELMJD
```
public static final NOAOExt TELMJD
```
    Time of zenith distance and hour angle
    units = 'd'
    
    default value = MJDHDR
    
    index = none
  - TELMJDn
```
public static final NOAOExt TELMJDn
```
    Times for the telescope sensor measurements given as modified Julian dates.
    units = 'd'
    
    default value = MJDHDR TELMJD
    
    index = none 1-999
  - TELPAN
```
public static final NOAOExt TELPAN
```
    Telescope position angle measurements in appropriate units. This could include altitude and azimuth measurements.
    default value = none none
    
    index = none 1-999
  - TELPANn
```
public static final NOAOExt TELPANn
```
    Telescope position angle measurements in appropriate units. This could include altitude and azimuth measurements.
    default value = none none
    
    index = none 1-999
  - TELPOS
```
public static final NOAOExt TELPOS
```
    Telescope linear position sensor measurements in appropriate units.
    default value = none none
    
    index = none 1-999
  - TELPOSn
```
public static final NOAOExt TELPOSn
```
    Telescope linear position sensor measurements in appropriate units.
    default value = none none
    
    index = none 1-999
  - TELPRE
```
public static final NOAOExt TELPRE
```
    Telescope pressure sensor measurements in appropriate units.
    units = UNITPRES
    
    default value = none none
    
    index = none 1-999
  - TELPREn
```
public static final NOAOExt TELPREn
```
    Telescope pressure sensor measurements in appropriate units.
    units = UNITPRES
    
    default value = none none
    
    index = none 1-999
  - TELRA
```
public static final NOAOExt TELRA
```
    Telescope pointing right ascension.
    units = TELRAU
    
    default value = RA
    
    index = none
  - TELRADEC
```
public static final NOAOExt TELRADEC
```
    Telescope pointing coordinate system type.
    default value = RADECSYS
    
    index = none
  - TELRAU
```
public static final NOAOExt TELRAU
```
    Right ascension unit.
    default value = RAUNIT
    
    index = none
  - TELSTAT
```
public static final NOAOExt TELSTAT
```
    Telescope status.
    default value = none
    
    index = none
  - TELTCS
```
public static final NOAOExt TELTCS
```
    Telescope control system software version.
    default value = none
    
    index = none
  - TELTEM
```
public static final NOAOExt TELTEM
```
    Telescope temperature sensor measurements in degrees Celsius. The comment string may be modified to indicate the location of the measurement.
    units = UNITTEMP
    
    default value = none none
    
    index = none 1-999
  - TELTEMn
```
public static final NOAOExt TELTEMn
```
    Telescope temperature sensor measurements in degrees Celsius. The comment string may be modified to indicate the location of the measurement.
    units = UNITTEMP
    
    default value = none none
    
    index = none 1-999
  - TELTKDEC
```
public static final NOAOExt TELTKDEC
```
    Declination telescope tracking rate in arc seconds per second.
    units = UNITRATE
    
    default value = none
    
    index = none
  - TELTKRA
```
public static final NOAOExt TELTKRA
```
    Right ascension telescope tracking rate from siderial in arc seconds per second.
    units = UNITRATE
    
    default value = none
    
    index = none
  - TELVER
```
public static final NOAOExt TELVER
```
    Telescope hardware version.
    default value = none
    
    index = none
  - TELVOL
```
public static final NOAOExt TELVOL
```
    Telescope voltage sensor measurements in volts.
    units = UNITVOLT
    
    default value = none none
    
    index = none 1-999
  - TELVOLn
```
public static final NOAOExt TELVOLn
```
    Telescope voltage sensor measurements in volts.
    units = UNITVOLT
    
    default value = none none
    
    index = none 1-999
  - TIMEEND
```
public static final NOAOExt TIMEEND
```
    Time of exposure end in the TSYSEND system.
    units = UNITHOUR
    
    default value = none
    
    index = none
  - TIMEHDR
```
public static final NOAOExt TIMEHDR
```
    Time of header creation.
    units = UNITHOUR
    
    default value = TIMESYS
    
    index = none
  - TIMESYS
```
public static final NOAOExt TIMESYS
```
    Default time system. All times which do not have a "timesys" element associated with them in this dictionary default to this keyword. .
    default value = 'UTC'
    
    index = none
  - TRIMSEC
```
public static final NOAOExt TRIMSEC
```
    Section of the recorded image to be kept after calibration processing. This is generally the part of the data section containing useful data. The section is in in binned pixels if binning is done.
    default value = DATASEC
    
    index = none
  - TSYSEND
```
public static final NOAOExt TSYSEND
```
    Time system for the TIMEEND keyword.
    default value = TIMESYS
    
    index = none
  - TSYSHDR
```
public static final NOAOExt TSYSHDR
```
    Time system for the header creation keywords.
    default value = TIMESYS
    
    index = none
  - TSYSOBS
```
public static final NOAOExt TSYSOBS
```
    Time system for the TIME-OBS keyword.
    default value = TIMESYS
    
    index = none
  - TV
```
public static final NOAOExt TV
```
    TV name.
    default value = none none
    
    index = none 1-9
  - TVFILTn
```
public static final NOAOExt TVFILTn
```
    TV filter names. This name is the astronomical standard name if applicable; i.e. U, B, Gunn I, etc. The filter type and filter device position are given by other keywords.
    default value = none none
    
    index = 1-9 1-9,1-9
  - TVFOCn
```
public static final NOAOExt TVFOCn
```
    Television focus value in available units.
    units = 'instrumental'
    
    default value = none none
    
    index = 1-9 1-9,1-9
  - TVFPOSn
```
public static final NOAOExt TVFPOSn
```
    TV filter position given as filter wheel number or other filter system position measurement.
    units = 'instrumental'
    
    default value = none none
    
    index = 1-9 1-9,1-9
  - TVFTYPn
```
public static final NOAOExt TVFTYPn
```
    TV filter type. This is the technical specification or observatory identification name.
    default value = none none
    
    index = 1-9 1-9,1-9
  - TVHWV
```
public static final NOAOExt TVHWV
```
    TV identification and hardware version.
    default value = none none
    
    index = none 1-9
  - TVMJDn
```
public static final NOAOExt TVMJDn
```
    Times for the guider television sensor measurements given as modified Julian dates.
    units = 'd'
    
    default value = MJDHDR TVMJD%d
    
    index = 1-9 1-9,1-9
  - TVn
```
public static final NOAOExt TVn
```
    TV name.
    default value = none none
    
    index = none 1-9
  - TVnFILTn
```
public static final NOAOExt TVnFILTn
```
    TV filter names. This name is the astronomical standard name if applicable; i.e. U, B, Gunn I, etc. The filter type and filter device position are given by other keywords.
    default value = none none
    
    index = 1-9 1-9,1-9
  - TVnFOCn
```
public static final NOAOExt TVnFOCn
```
    Television focus value in available units.
    units = 'instrumental'
    
    default value = none none
    
    index = 1-9 1-9,1-9
  - TVnFPOSn
```
public static final NOAOExt TVnFPOSn
```
    TV filter position given as filter wheel number or other filter system position measurement.
    units = 'instrumental'
    
    default value = none none
    
    index = 1-9 1-9,1-9
  - TVnFTYPn
```
public static final NOAOExt TVnFTYPn
```
    TV filter type. This is the technical specification or observatory identification name.
    default value = none none
    
    index = 1-9 1-9,1-9
  - TVnHWV
```
public static final NOAOExt TVnHWV
```
    TV identification and hardware version.
    default value = none none
    
    index = none 1-9
  - TVnMJDn
```
public static final NOAOExt TVnMJDn
```
    Times for the guider television sensor measurements given as modified Julian dates.
    units = 'd'
    
    default value = MJDHDR TVMJD%d
    
    index = 1-9 1-9,1-9
  - TVnPANn
```
public static final NOAOExt TVnPANn
```
    Television position angle measurements in appropriate units.
    default value = none none
    
    index = 1-9 1-9,1-9
  - TVnPOSn
```
public static final NOAOExt TVnPOSn
```
    Television linear position sensor measurements in appropriate units.
    default value = none none
    
    index = 1-9 1-9,1-9
  - TVnPREn
```
public static final NOAOExt TVnPREn
```
    Television pressure sensor measurements in appropriate units.
    units = UNITPRES
    
    default value = none none
    
    index = 1-9 1-9,1-9
  - TVnSTAT
```
public static final NOAOExt TVnSTAT
```
    TV status.
    default value = none none
    
    index = none 1-9
  - TVnSWV
```
public static final NOAOExt TVnSWV
```
    TV software version.
    default value = none none
    
    index = none 1-9
  - TVnTEMn
```
public static final NOAOExt TVnTEMn
```
    Television temperature sensor measurements in degrees Celsius.
    units = UNITTEMP
    
    default value = none none
    
    index = 1-9 1-9,1-9
  - TVnVOLn
```
public static final NOAOExt TVnVOLn
```
    Television voltage sensor measurements in volts.
    units = UNITVOLT
    
    default value = none none
    
    index = 1-9 1-9,1-9
  - TVPANn
```
public static final NOAOExt TVPANn
```
    Television position angle measurements in appropriate units.
    default value = none none
    
    index = 1-9 1-9,1-9
  - TVPOSn
```
public static final NOAOExt TVPOSn
```
    Television linear position sensor measurements in appropriate units.
    default value = none none
    
    index = 1-9 1-9,1-9
  - TVPREn
```
public static final NOAOExt TVPREn
```
    Television pressure sensor measurements in appropriate units.
    units = UNITPRES
    
    default value = none none
    
    index = 1-9 1-9,1-9
  - TVSTAT
```
public static final NOAOExt TVSTAT
```
    TV status.
    default value = none none
    
    index = none 1-9
  - TVSWV
```
public static final NOAOExt TVSWV
```
    TV software version.
    default value = none none
    
    index = none 1-9
  - TVTEMn
```
public static final NOAOExt TVTEMn
```
    Television temperature sensor measurements in degrees Celsius.
    units = UNITTEMP
    
    default value = none none
    
    index = 1-9 1-9,1-9
  - TVVOLn
```
public static final NOAOExt TVVOLn
```
    Television voltage sensor measurements in volts.
    units = UNITVOLT
    
    default value = none none
    
    index = 1-9 1-9,1-9
  - UNITALT
```
public static final NOAOExt UNITALT
```
    Altitude unit.
    default value = UNITANG
    
    index = none
  - UNITANG
```
public static final NOAOExt UNITANG
```
    Plane angle unit.
    default value = 'deg'
    
    index = none
  - UNITAP
```
public static final NOAOExt UNITAP
```
    Focal plane aperture size unit.
    default value = 'arcsec'
    
    index = none
  - UNITAREA
```
public static final NOAOExt UNITAREA
```
    Area unit.
    default value = 'pixel'
    
    index = none
  - UNITAZ
```
public static final NOAOExt UNITAZ
```
    Azimuth unit.
    default value = UNITANG
    
    index = none
  - UNITCAP
```
public static final NOAOExt UNITCAP
```
    Capacitance unit.
    default value = 'F'
    
    index = none
  - UNITCHAR
```
public static final NOAOExt UNITCHAR
```
    Charge unit.
    default value = 'C'
    
    index = none
  - UNITCOND
```
public static final NOAOExt UNITCOND
```
    Conductance unit.
    default value = 'S'
    
    index = none
  - UNITCUR
```
public static final NOAOExt UNITCUR
```
    Current unit.
    default value = 'A'
    
    index = none
  - UNITDEC
```
public static final NOAOExt UNITDEC
```
    Delination unit.
    default value = 'deg'
    
    index = none
  - UNITENER
```
public static final NOAOExt UNITENER
```
    Energy unit.
    default value = 'J'
    
    index = none
  - UNITEVNT
```
public static final NOAOExt UNITEVNT
```
    Event unit.
    default value = 'count'
    
    index = none
  - UNITFLUX
```
public static final NOAOExt UNITFLUX
```
    Flux unit.
    default value = 'Jy'
    
    index = none
  - UNITFORC
```
public static final NOAOExt UNITFORC
```
    Force unit.
    default value = 'N'
    
    index = none
  - UNITFREQ
```
public static final NOAOExt UNITFREQ
```
    Frequency unit.
    default value = 'Hz'
    
    index = none
  - UNITHOUR
```
public static final NOAOExt UNITHOUR
```
    Time of day unit.
    default value = h
    
    index = none
  - UNITILLU
```
public static final NOAOExt UNITILLU
```
    Illuminance unit.
    default value = 'lux'
    
    index = none
  - UNITINDU
```
public static final NOAOExt UNITINDU
```
    Inductance unit.
    default value = 'H'
    
    index = none
  - UNITLAT
```
public static final NOAOExt UNITLAT
```
    Latitude unit.
    default value = UNITANG
    
    index = none
  - UNITLEN
```
public static final NOAOExt UNITLEN
```
    Length unit. A wavelength unit is also provided so this unit is primarily used to instrumental descriptions.
    default value = 'm'
    
    index = none
  - UNITLFLX
```
public static final NOAOExt UNITLFLX
```
    Luminous flux unit.
    default value = 'lm'
    
    index = none
  - UNITLINT
```
public static final NOAOExt UNITLINT
```
    Luminous intensity unit.
    default value = 'cd'
    
    index = none
  - UNITLONG
```
public static final NOAOExt UNITLONG
```
    Longitude unit.
    default value = UNITANG
    
    index = none
  - UNITMASS
```
public static final NOAOExt UNITMASS
```
    Mass unit.
    default value = 'kg'
    
    index = none
  - UNITMDEN
```
public static final NOAOExt UNITMDEN
```
    Magnetic density unit.
    default value = 'T'
    
    index = none
  - UNITMFLD
```
public static final NOAOExt UNITMFLD
```
    Magnetic field unit.
    default value = 'G'
    
    index = none
  - UNITMFLX
```
public static final NOAOExt UNITMFLX
```
    Magnetic flux unit.
    default value = 'Wb'
    
    index = none
  - UNITPA
```
public static final NOAOExt UNITPA
```
    Position angle unit.
    default value = UNITANG
    
    index = none
  - UNITPOW
```
public static final NOAOExt UNITPOW
```
    Power unit.
    default value = 'W'
    
    index = none
  - UNITPRES
```
public static final NOAOExt UNITPRES
```
    Pressure unit.
    default value = 'Pa'
    
    index = none
  - UNITRA
```
public static final NOAOExt UNITRA
```
    Right ascension unit.
    default value = 'hr'
    
    index = none
  - UNITRATE
```
public static final NOAOExt UNITRATE
```
    Celestial rate of motion.
    default value = arcsec/sec
    
    index = none
  - UNITRES
```
public static final NOAOExt UNITRES
```
    Resistance unit.
    default value = 'Ohm'
    
    index = none
  - UNITSANG
```
public static final NOAOExt UNITSANG
```
    Solid angle unit.
    default value = 'sr'
    
    index = none
  - UNITSEP
```
public static final NOAOExt UNITSEP
```
    Celestial separation unit.
    default value = 'arcsec'
    
    index = none
  - UNITTEMP
```
public static final NOAOExt UNITTEMP
```
    Temperature unit.
    default value = 'K'
    
    index = none
  - UNITTIME
```
public static final NOAOExt UNITTIME
```
    Time unit.
    default value = 's'
    
    index = none
  - UNITVEL
```
public static final NOAOExt UNITVEL
```
    Velocity unit.
    default value = 'km/s'
    
    index = none
  - UNITVOLT
```
public static final NOAOExt UNITVOLT
```
    Voltage unit.
    default value = 'V'
    
    index = none
  - UTC_OBS
```
public static final NOAOExt UTC_OBS
```
    UTC time at the start of the exposure.
    units = UNITHOUR
    
    default value = none
    
    index = none
  - UTCEND
```
public static final NOAOExt UTCEND
```
    UTC at the end of the exposure.
    units = UNITHOUR
    
    default value = none
    
    index = none
  - UTCHDR
```
public static final NOAOExt UTCHDR
```
    UTC of header creation.
    units = UNITHOUR
    
    default value = UTC-OBS
    
    index = none
  - UTCOBS
```
public static final NOAOExt UTCOBS
```
    Default UTC time for the observation. This keyword is generally not used and is UTC-OBS keyword for the start of the exposure on the detector is used.
    units = UNITHOUR
    
    default value = UTC-OBS
    
    index = none
  - WAT_nnn
```
public static final NOAOExt WAT_nnn
```
    IRAF WCS attribute strings for all axes. These are defined by the IRAF WCS system.
    default value = none
    
    index = 1-999
  - WATn_nnn
```
public static final NOAOExt WATn_nnn
```
    IRAF WCS attribute strings. These are defined by the IRAF WCS system.
    default value = none
    
    index = 1-9,1-999
  - WCSAnnn
```
public static final NOAOExt WCSAnnn
```
    Descriptive string identifying the source of the astrometry used to derive the WCS. One example is the exposure used to derive a WCS apart from the reference coordinate.
    default value = none WCSASTRM
    
    index = none 1-9999
  - WCSASTRM
```
public static final NOAOExt WCSASTRM
```
    Descriptive string identifying the source of the astrometry used to derive the WCS. One example is the exposure used to derive a WCS apart from the reference coordinate.
    default value = none WCSASTRM
    
    index = none 1-9999
  - WCSDIM
```
public static final NOAOExt WCSDIM
```
    Dimensionality of the WCS physical system. In IRAF a WCS can have a higher dimensionality than the image.
    default value = none
    
    index = none
  - WCSEnnn
```
public static final NOAOExt WCSEnnn
```
    Epoch of the coordinates used in the world coordinate system.
    units = 'yr' 'yr'
    
    default value = CCDEPOCH WCSEPOCH
    
    index = none 1-9999
  - WCSEPOCH
```
public static final NOAOExt WCSEPOCH
```
    Equinox when equatorial coordinates are used in the world coordinate system. A value before 1984 is Besselian otherwise it is Julian.
    units = 'yr' 'yr'
    
    default value = CCDEQUIN EQUINOX
    
    index = none 1-9999
  - WCSRADEC
```
public static final NOAOExt WCSRADEC
```
    Coordinate system type when equatorial coordinates are used in the world coordinate system.
    default value = CCDRADEC WCSRADEC
    
    index = none 1-9999
  - WCSRnnn
```
public static final NOAOExt WCSRnnn
```
    Coordinate system type when equatorial coordinates are used in the world coordinate system.
    default value = CCDRADEC WCSRADEC
    
    index = none 1-9999
  - WEATHER
```
public static final NOAOExt WEATHER
```
    Weather condition description. Generally this would be either 'clear' or 'partly cloudy'.
    default value = none
    
    index = none
  - ZD
```
public static final NOAOExt ZD
```
    Zenith distance of telescope pointing at TELMJD.
    units = UNITANG
    
    default value = none
    
    index = none
  - MJD_OBS
```
public static final NOAOExt MJD_OBS
```
    Modified Julian date at the start of the exposure. The fractional part of the date is given to better than a second of time.
    units = 'd'
    
    default value = none
    
    index = none
- Field Detail
  - key
```
private final IFitsHeader key
```
- Constructor Detail
  - NOAOExt
```
private NOAOExt(IFitsHeader.HDU hdu,
                IFitsHeader.VALUE valueType,
                java.lang.String comment)
```
  - NOAOExt
```
private NOAOExt(java.lang.String key,
                IFitsHeader.HDU hdu,
                IFitsHeader.VALUE valueType,
                java.lang.String comment)
```
- Method Detail
  - values
```
public static NOAOExt[] values()
```
    Returns an array containing the constants of this enum type, in the order they are declared. This method may be used to iterate over the constants as follows:
    for (NOAOExt c : NOAOExt.values()) System.out.println(c);
    Returns:
    
    an array containing the constants of this enum type, in the order they are declared
  - valueOf
```
public static NOAOExt valueOf(java.lang.String name)
```
    Returns the enum constant of this type with the specified name. The string must match exactly an identifier used to declare an enum constant in this type. (Extraneous whitespace characters are not permitted.)
    
    Parameters:
    
    name - the name of the enum constant to be returned.
    
    Returns:
    
    the enum constant with the specified name
    
    Throws:
    
    java.lang.IllegalArgumentException - if this enum type has no constant with the specified name
    
    java.lang.NullPointerException - if the argument is null
  - comment
```
public java.lang.String comment()
```
    Specified by:
    
    comment in interface IFitsHeader
  - hdu
```
public IFitsHeader.HDU hdu()
```
    Specified by:
    
    hdu in interface IFitsHeader
  - key
```
public java.lang.String key()
```
    Specified by:
    
    key in interface IFitsHeader
  - n
```
public IFitsHeader n(int... number)
```
    Specified by:
    
    n in interface IFitsHeader
  - status
```
public IFitsHeader.SOURCE status()
```
    Specified by:
    
    status in interface IFitsHeader
  - valueType
```
public IFitsHeader.VALUE valueType()
```
    Specified by:
    
    valueType in interface IFitsHeader

Enum NOAOExt

Nested Class Summary

Nested classes/interfaces inherited from interface nom.tam.fits.header.IFitsHeader

Enum Constant Summary

Field Summary

Constructor Summary

Method Summary

Methods inherited from class java.lang.Enum

Methods inherited from class java.lang.Object

Enum Constant Detail

ACTFREQ

ACTHWV

ACTMJD

ACTMJDn

ACTPAN

ACTPANn

ACTPOS

ACTPOSn

ACTPRE

ACTPREn

ACTSTAT

ACTSWV

ACTTEM

ACTTEMn

ACTVOL

ACTVOLn

ADAMJD

ADAMJDn

ADAPAN

ADAPANn

ADAPOS

ADAPOSn

ADAPRE

ADAPREn

ADAPSWV

ADAPTER

ADASTAT

ADATEM

ADATEMn

ADAVOL

ADAVOLn

ADC

ADCMJD

ADCMJDn

ADCPAN

ADCPANn

ADCPOS

ADCPOSn

ADCPRE

ADCPREn

ADCSTAT

ADCSWV

ADCTEM

ADCTEMn

ADCVOL

ADCVOLn

ADECnnn

ADEUnnn

ADODEC

ADODECU

ADOEPOCH

ADOEQUIN

ADOFREQ

ADOHWV

ADOMJD

ADOMJDn

ADOPAN

ADOPANn

ADOPOS

ADOPOSn

ADOPRE

ADOPREn

ADORA

ADORADEC

ADORAU

ADOSTAT

ADOSWV

ADOTEM

ADOTEMn

ADOTYPE