Keyword Format Comment ------------------------------------------------------------- SIMPLE b Conforms to FITS standard BITPIX d 32 BIT SIGNED TWOS COMPLEMENT INTEGER NAXIS d NUMBER OF AXES NAXIS1 d PIXELS ON 1st MOST VARYING AXIS NAXIS2 d PIXELS ON 2nd MOST VARYING AXIS EXTEND b Extension exists or not (T or F) I_HDRVER f IRCS header version OBSERVAT s TELESCOP s INSTRUME s OBS-ALOC s Observation or Standby PROP-ID s Proposal ID DATASET s Id of Observation Dataset OBSERVER s OBJECT s DATA-TYP s EXP-ID s FRAMEID s I_FNAME s OBS-MOD s Observation Mode DATE-OBS s UT date of Observation (yyyy-mm-dd) DETECTOR s Name of detector DET-ID d Detector Id.(1:CAMERA, 2:SPECTROGRAPH EXP1TIME .3f Exposure time of a frame (sec) EXPTIME .2f Total integration time of a frame(sec) TIMESYS s Time system used in this header UT1-UTC .5f Difference between UT1 and UTC HST s Start exposure at HST (HH:MM:SS.SS) UT-STR s Start Exposure at UTC (HH:MM:SS.SS) UT s Typical UTC at exposure (HH:MM:SS.SS) UT-END s End Exposure at UTC (HH:MM:SS.SS) COADD d Number of Coadds BIN-FCT1 d Binning factor of the X axis BIN-FCT2 d Binning factor of the Y axis BLANK d Value used for null pixels BUNIT s Unit of original pixel values BSCALE .8f Real = fits-value*BSCALE+BZERO BZERO .8f Real = fits-value*BSCALE+BZERO DET-TMP .2f Detector Temperature DET-NSMP d Number of Non-Destructive Reads SLIT s Entrance slit identifier EQUINOX .3f Standard FK5 (years) MJD .8f Modified Julian Day at typical time LST s Typical local sidereal time during exposure WCS-ORIG s Origin of World Coordinate System RA s HH:MM:SS.SSS RA pointing DEC s +/-DD:MM:SS.SS DEC pointing RA2000 s HH:MM:SS.SSS RA (J2000) pointing DEC2000 s +/-DD:MM:SS.SS DEC (J2000) pointing AZIMUTH .5f Azimuth angle of telescope pointing ALTITUDE .5f Altitude angle of telescope pointing ZD .5f Zenith Distance at typical time RADECSYS s Equatorial coordinate system CTYPE1 s Pixel Coordinate System CTYPE2 s Pixel Coordinate System CRPIX1 .1f Reference pixel in X (pixel) CRPIX2 .1f Reference pixel in Y (pixel) CRVAL1 .8f RA (dg) of CRPIX1 reference pixel X CRVAL2 .8f DEC (dg) of CRPIX2 reference pixel Y CDELT1 .8f X Scale projected on detector (dg/pixel) CDELT2 .8f Y Scale projected on detector (dg/pixel) CUNIT1 s CRVAL1 units CUNIT2 s CRVAL2 units PROJP1 .1f Projection Type of the first axis PROJP2 .1f Projection Type of the second axis PC001001 .8f Coordinate translation matrix PC001002 .8f Coordinate translation matrix PC002001 .8f Coordinate translation matrix PC002002 .8f Coordinate translation matrix FOC-POS s Focus where instrument is attached TELFOCUS s Focus where a beam is reachable FOC-VAL .3f Encoder value of the focus unit AIRMASS .3f Averaged Air Mass INSROT .3f Instrument rotator angle INST-PA .3f Instrument rotator position angle AUTOGUID s Autoguiding ON/OFF FILTER01 s First filter element FILTER02 s Second filter element FILTER03 s Third filter element DISPERSR s Disperser name DISPAXIS d Number of dispersing axes WAVELEN .4f Wavelength at detector center (microns) SLTCPIX1 .1f Slit detector center (pixel) SLTCPIX2 .1f Slit detector center (pixel) SLT-LEN .3f Slit length (arcsec) SLT-WID .3f Slit width (arcsec) SLT-PA .1f Slit Position Angle (degree) SLTC-RA .5f RA of slit center (degree) SLTC-DEC .5f DEC of slit center (degree) GAIN .3f AD conversion factor (electron/ADU) I_SOM s System Observing Mode I_NSQ d Number of the frame in the sequence I_NSQMAX d Maximum number of the sequence I_SCALE s Pixel Scale Degrees I_CAMRES s CamRes setting I_CKMODE s Detector clock mode I_GRNS d Detector global reset pulsewidth (ns) I_VGGCL .2f Detector VGGCL volts I_VDET .2f Detector VDET (volts) I_VDDUC .2f Detector VDDUC (volts) I_VBIAS .2f Detector Bias= I_VDET-I_VDDUC (volts) I_BGRFL b Backgroud Resets flag T:Yes F:No I_BGRRT d Detector backgroud resets rate (ms) I_BGRDL d Detector background reset delay (ms) I_BGRPW d Backgroud Resets pulsewidth (nanosec) I_SLWCNT d Number of detector Slow Counts I_NDR d Number of Non-Destructive Reads I_NSUBAR d Number of Sub Arrays I_SAR1CX d Subarray 1 center x pixel coord I_SAR1CY d Subarray 1 center y pixel coord I_SAR1WD d Subarray 1 width I_SAR1HT d Subarray 1 height I_NDRASZ .8f Nod R.A. size (arcsec) I_NDDCSZ .8f Nod DEC size (arcsec) I_DTHPAT s Dither pattern shape I_DTHNUM d N positions in dither I_DTHPOS s Dither position I_MCW1NM s Camera Wheel-1 element name I_MCW1PK d Camera Wheel-1 puka I_MCW2NM s Camera Wheel-2 element name I_MCW2PK d Camera Wheel-2 puka I_CW2HV d Camera Wheel-2 Hall Value I_CW2MP d Camera Wheel-2 motor position I_MCW3NM s Camera Wheel-3 element name I_MCW3PK d Camera Wheel-3 puka I_CW3HV d Camera Wheel-3 Hall Value I_CW3MP d Camera Wheel-3 motor position I_MFOCMC s Focus Stage microns I_MFOCHV d Focus Stage hall value I_MFOCMP d Focus Stage motor position I_MDFMST s Dual Flipmirror State I_MFM1ST s Flipmirror-1 State IN/OUT I_MFM1HV d Flipmirror-1 Hall Value I_MFM1MP d FlipMirror-1 motor position I_MFM2ST s Flipmirror-2 state IN/OUT I_MFM2HV d Flipmirror-2 Hall Value I_MFM2MP d FlipMirror-2 motor position I_SLWNM s SlitWheel element name I_SLWPK d Slitwheel puka I_SLWHV d Slitwheel Hall Value I_SLWMP d Slitwheel motor position I_SPWNM s Spectrograph Wheel element name I_SPWPK d Spectrograph Filter Wheel Puka I_SPWHV d Spectrograph Filter Wheel Hall Value I_SPWMP d Spectrograph Filter Wheel Motor Position I_MECHAS d Echelle Arcsec I_MECHHV d Echelle Hall value I_MECHMP d Echelle Motor Position I_MXDSAS d Cross Disperser Arcsec I_MXDSHV d Cross Disperser Hall value I_MXDSMP d Cross Disperser motor position I_PGAIN .3f Gain of Redline Preamp Boards D_MODE s Guide star mode (NGS,LGS,LGSwoNGS,NGS-NGS) D_ENSHUT s Entrance shutter position (OPEN,CLOSE) D_ESHUTP .5f Entrance shutter position (mm) D_CLD1 s CAL LD 655nm (ON,OFF) D_CLD2 s CAL LD 1550nm (ON,OFF) D_CLD3 s CAL LD 589nm (ON,OFF) D_CALX s CAL X stage position D_CALXP .3f CAL X stage position (mm) D_CALZ s CAL Z stage position D_CALZP .3f CAL Z stage position (mm) D_IMR s IMR tracking status (TRACKING,SLEWING,STAND-BY) D_IMRMOD s IMR tracking mode (SID,NON-SID,ADI,STOP,OTHER) D_IMRANG .3f IMR angle (deg) D_IMRPAD .3f IMR position angle of dec. axis (deg) D_IMRPAP .3f IMR pupil position angle (deg) D_IMRRA s IMR tracking right ascension (J2000) D_IMRDEC s IMR tracking declination (J2000) D_SADC s SciPath ADC position (IN, OUT) D_SADCP .5f SciPath ADC position (mm) D_SADCST s SciPath ADC tracking status D_SADCMD s SciPath ADC tracking mode D_SADCA1 .5f SciPath ADC prism #1 position (deg) D_SADCA2 .5f SciPath ADC prism #2 position (deg) D_SADCFC .3f SciPath ADC prism angle correction factor D_SADCRA s SciPath ADC tracking right ascension (J2000) D_SADCDC s SciPath ADC tracking declination (J2000) D_SADCPA .3f SciPath ADC tracking position angle (deg) D_TTX .3f TT mount tip voltage (V) D_TTY .3f TT mount tilt voltage (V) D_WTTC1 .3f HOWFS TT ch1 voltage (V) D_WTTC2 .3f HOWFS TT ch2 voltage (V) D_BS1 s BS1 position (NIR1,NIR2,OPT) D_BS1P .5f BS1 position (mm) D_BS2 s BS2 position (BS589,MIRROR) D_BS2P .5f BS2 position (mm) D_FCONV s F-conversion optics position (IN,OUT) D_FCONVP .3f F-conversion optics stage position (mm) D_AU1X .5f AU1 offset X (mm) D_AU1Y .5f AU1 offset Y (mm) D_AU1XA .5f AU1 offset X on sky (arcsec) D_AU1YA .5f AU1 offset Y on sky (arcsec) D_AU1FOC .5f AU1 focus (mm) D_AU1TX .5f AU1 tilt X (deg) D_AU1TY .5f AU1 tilt Y (deg) D_AU1M1X .5f AU1 M1 X actuator (mm) D_AU1M1Y .5f AU1 M1 Y actuator (mm) D_AU1M1Z .5f AU1 M1 Z stage (mm) D_AU1M2X .5f AU1 M2 X actuator (mm) D_AU1M2Y .5f AU1 M2 Y actuator (mm) D_AU1GSX .3f AU1 guide star X pos (pix) D_AU1GSY .3f AU1 guide star Y pos (pix) D_AU2X .5f AU2 offset X (mm) D_AU2Y .5f AU2 offset Y (mm) D_AU2XA .5f AU2 offset X on sky (arcsec) D_AU2YA .5f AU2 offset Y on sky (arcsec) D_AU2FOC .5f AU2 focus (mm) D_AU2TX .5f AU2 tilt X (deg) D_AU2TY .5f AU2 tilt Y (deg) D_AU2M1X .5f AU2 M1 X actuator (mm) D_AU2M1Y .5f AU2 M1 Y actuator (mm) D_AU2M1Z .5f AU2 M1 Z stage (mm) D_AU2M2X .5f AU2 M2 X actuator (mm) D_AU2M2Y .5f AU2 M2 Y actuator (mm) D_AU2GSX .3f AU2 guide star X pos (pix) D_AU2GSY .3f AU2 guide star Y pos (pix) D_HWNAP s HOWFS NGS aperture name D_HWNAPP .5f HOWFS NGS aperture position (mm) D_HWLAP s HOWFS LGS aperture name D_HWLAPP .5f HOWFS LGS aperture position (mm) D_HWAD s HOWFS ADC stage position (IN,OUT) D_HWADP .5f HOWFS ADC stage position (mm) D_HWADST s HOWFS ADC tracking status D_HWADMD s HOWFS ADC tracking mode D_HWADA1 .3f HOWFS ADC prism #1 position (deg) D_HWADA2 .3f HOWFS ADC prism #1 position (deg) D_HWADFC .3f HOWFS ADC prism angle correction factor D_HWADRA s HOWFS ADC tracking right ascension (J2000) D_HWADDC s HOWFS ADC tracking declination (J2000) D_HWADPA .3f HOWFS ADC tracking position angle (deg) D_HWABS s HOWFS acq cam. BS position D_HWABSP .5f HOWFS acq cam. BS position (mm) D_HWAF1 s HOWFS acq cam. filter wheel#1 state D_HWAF1P .5f HOWFS acq cam. filter wheel#1 pos (deg) D_HWAF2 s HOWFS acq cam. filter wheel#2 state D_HWAF2P .5f HOWFS acq cam. filter wheel#2 pos (deg) D_HWHBS s HOWFS hires cam. BS position D_HWHBSP .5f HOWFS hires cam. BS position (mm) D_VMAP s HOWFS VM aperture D_VMAPS .4f HOWFS VM aperture size (arcsec) D_HWPBS s HOWFS pupil cam. BS position D_HWPBSP .5f HOWFS pupil cam. BS position (mm) D_HWLAZP .5f HOWFS LA focus stage pos (mm) D_HWLAF s HOWFS LA filter wheel position D_HWLAFP .5f HOWFS LA filter wheel pos (deg) D_HWLASH s HOWFS LA shutter state (OPEN,CLOSE) D_HWAPDA .3f HOWFS APD Average Counts (kcps/elem) D_LWAP1 s LOWFS AP1 name D_LWAP1P .4f HOWFS AP1 postition D_LWAD s LOWFS ADC stage position (IN,OUT) D_LWADP .5f LOWFS ADC stage position (mm) D_LWADST s LOWFS ADC tracking status D_LWADMD s LOWFS ADC tracking mode D_LWADA1 .3f LOWFS ADC prism #1 position (deg) D_LWADS1 d LOWFS ADC prism #1 position (microstep) D_LWADA2 .3f LOWFS ADC prism #1 position (deg) D_LWADS2 d LOWFS ADC prism #1 position (microstep) D_LWADFC .3f LOWFS ADC prism angle correction factor D_LWADRA s LOWFS ADC tracking right ascension (J2000) D_LWADDC s LOWFS ADC tracking declination (J2000) D_LWADPA .3f LOWFS ADC tracking position angle (deg) D_LWABS s LOWFS acq cam. BS position D_LWABSP .5f LOWFS acq cam. BS position (mm) D_LWAF1 s LOWFS acq cam. filter wheel#1 state D_LWAF1P .5f LOWFS acq cam. filter wheel#1 pos (deg) D_LWAF2 s LOWFS acq cam. filter wheel#2 state D_LWAF2P .5f LOWFS acq cam. filter wheel#2 pos (deg) D_LWAP2 s LOWFS AP2 name D_LWAP2S .4f LOWFS AP2 size (arcsec) D_LWPBS s LOWFS pupil cam. BS position D_LWPBSP .5f LOWFS pupil cam. BS position (mm) D_LWLAZ s LOWFS LA focus stage position D_LWLAZP .5f LOWFS LA focus stage pos (mm) D_LWLAF s LOWFS LA filter wheel position D_LWLAFP .5f LOWFS LA filter wheel pos (deg) D_LWLASH s LOWFS LA shutter state (OPEN,CLOSE) D_LWAPDA .3f LOWFS APD Average Counts (kcps/elem) D_VMDRV s VM drive (ON,OFF) D_VMVOLT .2f VM voltage (V) D_VMFREQ .1f VM frequency (Hz) D_VMPHAS .1f VM phase (deg) D_LOOP s RTS Loop state (ON,OFF) D_DMGAIN .3f RTS DM gain D_TTGAIN .5f RTS TT offload gain D_PSUBG .2f RTS piston subtract gain D_DMCMTX s RTS DM control matrix D_TTCMTX s RTS TT control matrix D_WTTG .3f RTS HOWFS-TT gain D_LTTG .3f RTS low order TT gain D_LDFG .3f RTS low order defocus gain D_HTTG .3f RTS high order TT gain D_HDFG .3f RTS high order defocus gain D_ADFG .3f RTS AU1 defocus gain D_STTG .3f RTS secondary TT gain D_APDTI .2f APD coolant inlet temperature (degC) D_APDTO .2f APD coolant outlet temperature (degC) D_BNCTI .2f Temperature of AO bench inside (degC) D_BNCTO .2f Temperature of AO bench outside (degC) D_BNCHI .2f Humidity of AO bench inside () D_BNCHO .2f Hhumidity of AO bench outside () D_LSTATE s Laser: Generation status (EMIT/SHUTTERED/OFF) D_L589P .2f Laser: Output power of SFG589 (W) D_LPCUST s Laser: Status of power control unit D_LRCUST s Laser: Status of remote control unit D_LDSC .3f Diag: Brightness of Sodium gas cell D_LDSCPG .3f Diag: Gain of PMT for Sodium gas cell D_LDSCT .1f Diag: Temperature of Sodium gas cell D_LFID d Fiber: ID of Laser Fiber D_LFRP .2f Fiber: Power returned from LLT through fiber D_LFRPR d Fiber: Gain range of returned power D_LFTHP .2f Fiber: Overall throughput of relay fiber () D_LRSTAT s LaserRoom: Overall status D_LTLNCH s LLT: Laser launching status (ON/OFF) D_LTCLXP .3f LLT: Collimator lens X-stage pos. (micron) D_LTCLYP .3f LLT: Collimator lens Y-stage pos. (micron) D_LTCLZP .3f LLT: Collimator lens Z-stage pos. (micron) D_LTM3XP .3f LLT: M3X Stage position of (micron) D_LTM3ZP .3f LLT: M3Z Stage position of (micron) D_LTLPWR .2f LLT: Laser power at LLT (Watt) D_LTTOPT .2f LLT: Temperature at OPT side (degC) D_LTTIR .2f LLT: Temperature at IR side (degC) D_LTTFRT .2f LLT: Temperature at FRONT side (degC) D_LTTRER .2f LLT: Temperature at REAR side (degC) D_LTSHUT s LLT: Shutter status (OPEN/CLOSE) D_LTCPOL s LTCS: Policy (FirstON/Classical) D_LTCSHS s LTCS: Status of shuttering (OPEN/CLOSE) D_LTCLST s LTCS: Laser propagation status (ONSKY/ON/OFF) D_LTCTCS s LTCS: Status of collision with telescopes D_LTCSTS s LTCS: Status of collision with satellite D_LTCTTW d LTCS: Time until telescope collision (sec) D_LTCSTW d LTCS: Time until telescope collision (sec) RETPLAT1 s Identifier of first Retarder Plate RET-ANG1 .2f Position angle of first Retarder Plate (deg) RETPLAT2 s Identifier of second Retarder Plate RET-ANG2 .2f Position angle of second Retarder Plate (deg) POLARIZ1 s Identifier of first Polarizer POL-ANG1 .2f Position angle of first Polarizer (deg) P_STAG1 s Identifier of stage 1 P_STAG2 s Identifier of stage 2 P_STAG3 s Identifier of stage 3 P_STGPS1 .2f Position of stage 1 P_STGPS2 .2f Position of stage 2 P_STGPS3 .2f Position of stage 3 P_RTAGL1 .2f Angle of retarder 1 (deg) P_RTAGL2 .2f Angle of retarder 2 (deg) P_RTAGL3 .2f Angle of retarder 3 (deg) P_RTAGL4 .2f Angle of retarder 4 (deg) P_ROTMD1 s Rotation mode of retarder 1 P_ROTMD2 s Rotation mode of retarder 2 P_ROTMD3 s Rotation mode of retarder 3 P_ROTMD4 s Rotation mode of retarder 4 P_RTPLT1 s Retarder1 from WAVEPLAT P_RTPLT2 s Retarder2 from WAVEPLAT P_RTPLT3 s Retarder3 from WAVEPLAT P_RTPLT4 s Retarder4 from WAVEPLAT