=========================== fiberflat-CAMERA-EXPID.fits =========================== :Summary: This file contains the fiberflat such that newflux = rawflux/fiberflat. :Naming Convention: ``fiberflat-{CAMERA}-{EXPID}.fits``, where ``{camera}`` is the camera name (*e.g.* b0, r1, z9) and ``{EXPID}`` is the zero padded 8-digit exposure ID. :Regex: ``fiberflat-[brz][0-9]-[0-9]{8}\.fits`` :File Type: FITS, 16 MB Contents ======== ====== ================ ======== =================================== Number EXTNAME Type Contents ====== ================ ======== =================================== HDU0_ FIBERFLAT IMAGE fiberflat[nspec, nwave] HDU1_ IVAR IMAGE inverse variance of fiberflat HDU2_ MASK IMAGE bitmask of fiberflat (0=good) HDU3_ MEANSPEC IMAGE average spectrum[nwave] HDU4_ WAVELENGTH IMAGE wavelength grid[nwave] in Angstroms HDU5_ FIBERMAP BINTABLE fibermap ====== ================ ======== =================================== Note: the FIBERMAP HDU may be dropped from future versions FITS Header Units ================= HDU0 ---- EXTNAME = FIBERFLAT Fiber flat field correction to homogeneize the response among fibers of the same camera, for each wavelength. 2D array of dimension [nspec, nwave]. nspec is the number of fibers per camera. nwave in the length of the wavelength array. The fiber flat field of all fibers share the same wavelength grid (given in HDU WAVELENGTH). This file is the fiber flat derived for the flat exposure EXPID. It is an intermediate file used as input for the nightly fiber flat. Required Header Keywords ~~~~~~~~~~~~~~~~~~~~~~~~ Header keywords are inherited from the input Frame file. .. collapse:: Required Header Keywords Table .. rst-class:: keywords ============= ============================================================ ======= ==================================================== KEY Example Value Type Comment ============= ============================================================ ======= ==================================================== NAXIS1 2326 int NAXIS2 500 int EXPID 68979 int Exposure number EXPFRAME 0 int Frame number FLAVOR science str Observation type SEQUENCE Spectrographs str OCS Sequence name PURPOSE Commissioning str Purpose of observing night PROGRAM CALIB DESI-CALIB-00 LEDs only str Program name PROPID 2019B-5000 str Proposal ID OBSERVER DESIObserver str Names of observers LEAD RunManager str Lead observer INSTRUME DESI str Instrument name OBSERVAT KPNO str Observatory name OBS-LAT 31.96403 str [deg] Observatory latitude OBS-LONG -111.59989 str [deg] Observatory east longitude OBS-ELEV 2097.0 float [m] Observatory elevation TELESCOP KPNO 4.0-m telescope str Telescope name CORRCTOR DESI Corrector str Corrector Identification NIGHT 20201220 int Observing night TIMESYS UTC str Time system used for date-obs DATE-OBS 2020-12-20T22:24:15.672815 str [UTC] Observation data and start time TIME-OBS 22:24:15.672815 str [UTC] Observation start time MJD-OBS 59203.93351473 float Modified Julian Date of observation ST 20:57:41.340 str Local Sidereal time at observation start (HH:MM EXPTIME 120.037 float [s] Actual exposure time DELTARA 0.0 float [arcsec] Offset], right ascension, observer inp DELTADEC 0.0 float [arcsec] Offset], declination, observer input VCCD ON str True (ON) if CCD voltage is on VCCDON 2020-12-09T21:23:19.307761 str Time when CCD voltage was turned on VCCDSEC 954226.0 float [s] CCD on time in seconds EQUINOX 2000.0 float Epoch of observation SPECGRPH 8 int Spectrograph logical name (SP) SPECID 2 int Spectrograph serial number (SM) FEEBOX lbnl050 str CCD Controller serial number VESSEL 8 int Cryostat serial number FEEVER v20160312 str CCD Controller version DETFLVER [1]_ FAILED: invalid argument for get command str CCD Controller detector f FEEPOWER ON str FEE power status FEEDMASK 2134851391 int FEE dac mask FEECMASK 1048575 int FEE clk mask CCDTEMP -135.3315 float [deg C] CCD controller CCD temperature RADESYS FK5 str Coordinate reference frame of major/minor axes FILENAME /exposures/desi/specs/20201220/00068979/sp9-00068979.fits.fz str Name DOSVER trunk str DOS software version OCSVER 1.2 float OCS software version CONSTVER DESI:CURRENT str Constants version INIFILE /data/msdos/dos_home/architectures/kpno/desi.ini str DOS Configuration AMPSECB [4114:2058, 1:2064] str AMP section for quadrant B DAC16 39.9961,39.3162 str [V] set value, measured value CLOCK8 9.9992,2.9993 str [V] high rail, low rail PRRSECD [2193:4249, 4194:4194] str Row prescan section for quadrant D CCDPREP purge,clear str CCD prep actions CLOCK10 9.9992,2.9993 str [V] high rail, low rail DAC17 20.0008,12.2488 str [V] set value, measured value ORSECB [2193:4249, 2066:2097] str Row overscan section for quadrant B DAC15 0.0,0.0148 str [V] set value, measured value ORSECD [2193:4249, 2098:2129] str Row bias section for quadrant D DIGITIME 47.5846 float [s] Time to digitize image BIASSECA [2065:2128, 2:2065] str Bias section for quadrant A CLOCK9 9.9992,2.9993 str [V] high rail, low rail CLOCK18 9.0,0.9999 str [V] high rail, low rail CAMERA r8 str Camera name CLOCK17 9.0,0.9999 str [V] high rail, low rail CLOCK5 9.9999,0.0 str [V] high rail, low rail TRIMSECD [2193:4249, 2130:4193] str Trim section for quadrant D DETSECD [2058:4114, 2065:4128] str Detector section for quadrant D DAC0 -9.0002,-8.9507 str [V] set value, measured value CLOCK15 9.9992,2.9993 str [V] high rail, low rail TRIMSECA [8:2064, 2:2065] str Trim section for quadrant A BIASSECB [2129:2192, 2:2065] str Bias section for quadrant B CLOCK11 9.9992,2.9993 str [V] high rail, low rail CLOCK12 9.9992,2.9993 str [V] high rail, low rail AMPSECD [4114:2058, 4128:2065] str AMP section for quadrant D CLOCK4 9.9999,0.0 str [V] high rail, low rail PRRSECB [2193:4249, 1:1] str Row prescan section for quadrant B CCDSECD [2058:4114, 2065:4128] str CCD section for quadrant D CCDTMING default_lbnl_timing_20180905.txt str CCD timing file TRIMSECB [2193:4249, 2:2065] str Trim section for quadrant B CCDSIZE 4194,4256 str CCD size in pixels (rows, columns) PGAGAIN 3 int Controller gain PRESECD [4250:4256, 2130:4193] str Prescan section for quadrant D CLOCK6 9.9999,0.0 str [V] high rail, low rail CLOCK13 9.9992,2.9993 str [V] high rail, low rail DAC7 5.9998,6.028 str [V] set value, measured value DATASECA [8:2064, 2:2065] str Data section for quadrant A CRYOTEMP [1]_ 162.97 float [deg K] Cryostat CCD temperature OFFSET2 0.4000000059604645,-8.9198 str [V] set value, measured value OFFSET6 2.0,6.0437 str [V] set value, measured value DELAYS 20, 20, 25, 40, 7, 3000, 7, 7, 7, 7 str [10] Delay settings BIASSECD [2129:2192, 2130:4193] str Bias section for quadrant D PRRSECA [8:2064, 1:1] str Row prescan section for quadrant A TRIMSECC [8:2064, 2130:4193] str Trim section for quadrant C CLOCK3 -2.0001,3.9999 str [V] high rail, low rail CCDNAME CCDSM2R str CCD name DAC9 -25.0003,-24.768 str [V] set value, measured value CCDSECC [1:2057, 2065:4128] str CCD section for quadrant C ORSECA [8:2064, 2066:2097] str Row overscan section for quadrant A DAC5 5.9998,6.0543 str [V] set value, measured value CCDSECB [2058:4114, 1:2064] str CCD section for quadrant B DETSECB [2058:4114, 1:2064] str Detector section for quadrant B OFFSET0 0.4000000059604645,-8.9507 str [V] set value, measured value SETTINGS detectors_sm_20191211.json str Name of DESI CCD settings file DAC11 -25.0003,-24.8422 str [V] set value, measured value BIASSECC [2065:2128, 2130:4193] str Bias section for quadrant C CASETEMP 60.4294 float [deg C] CCD controller case temperature DAC10 -25.0003,-24.7086 str [V] set value, measured value DAC1 -9.0002,-8.9198 str [V] set value, measured value DAC14 0.0,0.0594 str [V] set value, measured value DETECTOR M1-46 str Detector (ccd) identification CDSPARMS 400, 400, 8, 2000 str CDS parameters OFFSET3 0.4000000059604645,-8.8992 str [V] set value, measured value DATASECB [2193:4249, 2:2065] str Data section for quadrant B ORSECC [8:2064, 2098:2129] str Row overscan section for quadrant C CRYOPRES [1]_ 9.084e-08 str [mb] Cryostat pressure (IP) AMPSECA [1:2057, 1:2064] str AMP section for quadrant A OFFSET7 2.0,6.028 str [V] set value, measured value DAC4 5.9998,6.028 str [V] set value, measured value DATASECC [8:2064, 2130:4193] str Data section for quadrant C PRESECC [1:7, 2130:4193] str Prescan section for quadrant C CLOCK16 9.9999,3.0 str [V] high rail, low rail CLOCK1 9.9999,0.0 str [V] high rail, low rail PRESECB [4250:4256, 2:2065] str Prescan section for quadrant B DAC12 0.0,0.0297 str [V] set value, measured value DAC8 -25.0003,-24.9312 str [V] set value, measured value OFFSET4 2.0,6.028 str [V] set value, measured value DAC2 -9.0002,-8.9198 str [V] set value, measured value CCDCFG default_lbnl_20190717.cfg str CCD configuration file BLDTIME 0.3585 float [s] Time to build image PRESECA [1:7, 2:2065] str Prescan section for quadrant A DATASECD [2193:4249, 2130:4193] str Data section for quadrant D DETSECC [1:2057, 2065:4128] str Detector section for quadrant C PRRSECC [8:2064, 4194:4194] str Row prescan section for quadrant C DAC6 5.9998,6.0437 str [V] set value, measured value DETSECA [1:2057, 1:2064] str Detector section for quadrant A CLOCK2 9.9999,0.0 str [V] high rail, low rail DAC3 -9.0002,-8.9095 str [V] set value, measured value OFFSET1 0.4000000059604645,-8.9198 str [V] set value, measured value AMPSECC [1:2057, 4128:2065] str AMP section for quadrant C CLOCK7 -2.0001,3.9999 str [V] high rail, low rail DAC13 0.0,0.0148 str [V] set value, measured value CCDSECA [1:2057, 1:2064] str CCD section for quadrant A OFFSET5 2.0,6.0543 str [V] set value, measured value CLOCK14 9.9992,2.9993 str [V] high rail, low rail CLOCK0 9.9999,0.0 str [V] high rail, low rail CPUTEMP 60.4394 float [deg C] CCD controller CPU temperature REQTIME 120.0 float [s] Requested exposure time OBSID kp4m20201220t222415 str Unique observation identifier PROCTYPE RAW str Data processing level PRODTYPE image str Data product type CHECKSUM bSeTbScSbScSbScS str HDU checksum updated 2022-01-29T01:14:36 DATASUM 1818512066 str data unit checksum updated 2022-01-29T01:14:36 GAINA 1.627 float e/ADU (gain applied to image) SATULEVA 65535.0 float saturation or non lin. level, in ADU, inc. bias OSTEPA 0.632482737491955 float ADUs (max-min of median overscan per row) OMETHA AVERAGE str use average overscan OVERSCNA 1984.644911356943 float ADUs (gain not applied) OBSRDNA 2.480943789810065 float electrons (gain is applied) SATUELEA 103396.4277292223 float saturation or non lin. level, in electrons GAINB 1.482 float e/ADU (gain applied to image) SATULEVB 65535.0 float saturation or non lin. level, in ADU, inc. bias OSTEPB 0.5400817486224696 float ADUs (max-min of median overscan per row) OMETHB AVERAGE str use average overscan OVERSCNB 1980.886896481526 float ADUs (gain not applied) OBSRDNB 2.179271146346672 float electrons (gain is applied) SATUELEB 94187.19561941437 float saturation or non lin. level, in electrons GAINC 1.581 float e/ADU (gain applied to image) SATULEVC 65535.0 float saturation or non lin. level, in ADU, inc. bias OSTEPC 0.6331518428269192 float ADUs (max-min of median overscan per row) OMETHC AVERAGE str use average overscan OVERSCNC 1965.76250622263 float ADUs (gain not applied) OBSRDNC 2.484447923351728 float electrons (gain is applied) SATUELEC 100502.964477662 float saturation or non lin. level, in electrons GAIND 1.589 float e/ADU (gain applied to image) SATULEVD 65535.0 float saturation or non lin. level, in ADU, inc. bias OSTEPD 0.6401253297517542 float ADUs (max-min of median overscan per row) OMETHD AVERAGE str use average overscan OVERSCND 1987.590453491951 float ADUs (gain not applied) OBSRDND 2.576419983467696 float electrons (gain is applied) SATUELED 100976.8337694013 float saturation or non lin. level, in electrons FIBERMIN 4000 int LONGSTRN OGIP 1.0 str The OGIP Long String Convention may be used. MODULE CI str Image Sources/Component FRAMES None Unknown Number of Frames in Archive COSMSPLT F bool Cosmics split exposure if true MAXSPLIT 0 int Number of allowed exposure splits SPLITIDS [1]_ 68979 str List of expids for split exposures OBSTYPE FLAT str Spectrograph observation type MANIFEST F bool DOS exposure manifest OBJECT str Object name SEQID 3 requests str Exposure sequence identifier SEQNUM 2 int Number of exposure in sequence SEQTOT 3 int Total number of exposures in sequence OPENSHUT None Unknown Time shutter opened CAMSHUT open str Shutter status during observation WHITESPT [1]_ T bool Telescope is at whitespot ZENITH [1]_ F bool Telescope is at zenith SEANNEX [1]_ F bool Telescope is at SE annex BEYONDP [1]_ F bool Telescope is beyond pole FIDUCIAL [1]_ off str Fiducials status during observation AIRMASS [1]_ 1.521306 float Airmass FOCUS [1]_ 1163.9,-689.8,370.4,13.8,24.2,-0.0 str Telescope focus settings TRUSTEMP [1]_ 13.267 float [deg] Average Telescope truss temperature (only PMIRTEMP [1]_ 7.35 float [deg] Average primary mirror temperature (nit,e PMREADY [1]_ F bool Primary mirror ready PMCOVER [1]_ open str Primary mirror cover PMCOOL [1]_ on str Primary mirror cooling DOMSHUTU [1]_ not open str Upper dome shutter DOMSHUTL [1]_ not open str Lower dome shutter DOMLIGHH [1]_ off str High dome lights DOMLIGHL [1]_ off str Low dome lights DOMEAZ [1]_ 253.289 float [deg] Dome azimuth angle DOMINPOS [1]_ F bool Dome is in position GUIDOFFR [1]_ 0.0 float [arcsec] Cummulative guider offset (RA) GUIDOFFD [1]_ -0.0 float [arcsec] Cummulative guider offset (dec) MOONDEC [1]_ -9.830944 float [deg] Moon declination at start of exposure MOONRA [1]_ 350.511461 float [deg] Moon RA at start of exposure MOUNTAZ [1]_ 73.49407 float [deg] Mount azimuth angle MOUNTDEC [1]_ 31.962703 float [deg] Mount declination MOUNTEL [1]_ 41.035778 float [deg] Mount elevation angle MOUNTHA [1]_ -58.479517 float [deg] Mount hour angle INCTRL [1]_ F bool DESI in control INPOS [1]_ T bool Mount in position MNTOFFD [1]_ -0.0 float [arcsec] Mount offset (dec) MNTOFFR [1]_ -0.0 float [arcsec] Mount offset (RA) PARALLAC [1]_ -73.492813 float [deg] Parallactic angle SKYDEC [1]_ 31.962703 float [deg] Telescope declination (pointing on sky) SKYRA [1]_ 12.901561 float [deg] Telescope right ascension (pointing on sk TARGTDEC [1]_ 31.963299 float [deg] Target declination (to TCS) TARGTRA [1]_ 6.305086 float [deg] Target right ascension (to TCS) TARGTAZ [1]_ 75.558672 float [deg] Target azimuth TARGTEL [1]_ 46.429343 float [deg] Target elevation TRGTOFFD [1]_ 0.0 float [arcsec] Telescope target offset (dec) TRGTOFFR [1]_ 0.0 float [arcsec] Telescope target offset (RA) ZD [1]_ 48.964222 float [deg] Telescope zenith distance TCSST [1]_ 20:57:41.291 str Local Sidereal time reported by TCS (HH:MM:SS) TCSMJD [1]_ 59203.933945 float MJD reported by TCS ADCCORR F bool Correct pointing for ADC setting if True ADC1PHI [1]_ 114.980003 float [deg] ADC 1 angle ADC2PHI [1]_ 162.869907 float [deg] ADC 2 angle ADC1HOME [1]_ F bool ADC 1 at home position if True ADC2HOME [1]_ F bool ADC 2 at home position if True ADC1NREV [1]_ 0.0 float ADC 1 number of revs ADC2NREV [1]_ -1.0 float ADC 2 number of revs ADC1STAT [1]_ STOPPED str ADC 1 status ADC2STAT [1]_ STOPPED str ADC 2 status HEXPOS [1]_ 1163.9,-689.8,370.4,13.8,24.2,-0.0 str Hexapod position HEXTRIM [1]_ 0.0,0.0,0.0,0.0,0.0,0.0 str Hexapod trim values ROTOFFST [1]_ 0.0 float [arcsec] Rotator offset ROTENBLD [1]_ T bool Rotator enabled ROTRATE [1]_ 0.0 float [arcsec/min] Rotator rate RESETROT F bool DOS Control: reset hex rotator GUIDMODE catalog str Guider mode USEAOS [1]_ F bool DOS Control: AOS data available if true SPCGRPHS SP0,SP1,SP2,SP3,SP4,SP5,SP6,SP7,SP8,SP9 str Participating spectrograph ILLSPECS [1]_ SP0,SP1,SP2,SP3,SP4,SP5,SP6,SP7,SP8,SP9 str Participating illuminate s CCDSPECS [1]_ SP0,SP1,SP2,SP3,SP4,SP5,SP6,SP7,SP8,SP9 str Participating ccd spectrog TDEWPNT [1]_ -18.2 float Telescope air dew point TAIRFLOW [1]_ 1.121 float Telescope air flow TAIRITMP [1]_ 10.5 float [deg] Telescope air in temperature TAIROTMP [1]_ 5.5 float [deg] Telescope air out temperature TAIRTEMP [1]_ 11.86 float [deg] Telescope air temperature TCASITMP [1]_ 0.0 float [deg] Telescope Cass Cage in temperature TCASOTMP [1]_ 9.6 float [deg] Telescope Cass Cage out temperature TCSITEMP [1]_ 7.4 float [deg] Telescope center section in temperature TCSOTEMP [1]_ 10.2 float [deg] Telescope center section out temperature TCIBTEMP [1]_ 0.0 float [deg] Telescope chimney IB temperature TCIMTEMP [1]_ 0.0 float [deg] Telescope chimney IM temperature TCITTEMP [1]_ 0.0 float [deg] Telescope chimney IT temperature TCOSTEMP [1]_ 0.0 float [deg] Telescope chimney OS temperature TCOWTEMP [1]_ 0.0 float [deg] Telescope chimney OW temperature TDBTEMP [1]_ 7.4 float [deg] Telescope dec bore temperature TFLOWIN [1]_ 7.7 float Telescope flow rate in TFLOWOUT [1]_ 8.3 float Telescope flow rate out TGLYCOLI [1]_ -1.8 float [deg] Telescope glycol in temperature TGLYCOLO [1]_ 0.0 float [deg] Telescope glycol out temperature THINGES [1]_ 12.9 float [deg] Telescope hinge S temperature THINGEW [1]_ 11.7 float [deg] Telescope hinge W temperature TPMAVERT [1]_ 7.304 float [deg] Telescope mirror averagetemperature TPMDESIT [1]_ 7.0 float [deg] Telescope mirror desired temperature TPMEIBT [1]_ 7.3 float [deg] Telescope mirror EIB temperature TPMEITT [1]_ 7.3 float [deg] Telescope mirror EIT temperature TPMEOBT [1]_ 7.4 float [deg] Telescope mirror EOB temperature TPMEOTT [1]_ 7.2 float [deg] Telescope mirror EOT temperature TPMNIBT [1]_ 7.4 float [deg] Telescope mirror NIB temperature TPMNITT [1]_ 7.3 float [deg] Telescope mirror NIT temperature TPMNOBT [1]_ 7.7 float [deg] Telescope mirror NOB temperature TPMNOTT [1]_ 7.6 float [deg] Telescope mirror NOT temperature TPMRTDT [1]_ 6.96 float [deg] Telescope mirror RTD temperature TPMSIBT [1]_ 7.4 float [deg] Telescope mirror SIB temperature TPMSITT [1]_ 7.0 float [deg] Telescope mirror SIT temperature TPMSOBT [1]_ 7.4 float [deg] Telescope mirror SOB temperature TPMSOTT [1]_ 7.2 float [deg] Telescope mirror SOT temperature TPMSTAT [1]_ soft air str Telescope mirror status TPMWIBT [1]_ 7.2 float [deg] Telescope mirror WIB temperature TPMWITT [1]_ 7.1 float [deg] Telescope mirror WIT temperature TPMWOBT [1]_ 7.6 float [deg] Telescope mirror WOB temperature TPMWOTT [1]_ 8.1 float [deg] Telescope mirror WOT temperature TPCITEMP [1]_ 7.7 float [deg] Telescope primary cell in temperature TPCOTEMP [1]_ 7.7 float [deg] Telescope primary cell out temperature TPR1HUM [1]_ 0.0 float Telescope probe 1 humidity TPR1TEMP [1]_ 0.0 float [deg] Telescope probe1 temperature TPR2HUM [1]_ 0.0 float Telescope probe 2 humidity TPR2TEMP [1]_ 0.0 float [deg] Telescope probe2 temperature TSERVO [1]_ 7.0 float Telescope servo setpoint TTRSTEMP [1]_ 13.2 float [deg] Telescope top ring S temperature TTRWTEMP [1]_ 13.4 float [deg] Telescope top ring W temperature TTRUETBT [1]_ -4.8 float [deg] Telescope truss ETB temperature TTRUETTT [1]_ 11.5 float [deg] Telescope truss ETT temperature TTRUNTBT [1]_ 10.9 float [deg] Telescope truss NTB temperature TTRUNTTT [1]_ 11.8 float [deg] Telescope truss NTT temperature TTRUSTBT [1]_ 11.1 float [deg] Telescope truss STB temperature TTRUSTST [1]_ 10.8 float [deg] Telescope truss STS temperature TTRUSTTT [1]_ 12.4 float [deg] Telescope truss STT temperature TTRUTSBT [1]_ 13.6 float [deg] Telescope truss TSB temperature TTRUTSMT [1]_ 13.7 float [deg] Telescope truss TSM temperature TTRUTSTT [1]_ 12.5 float [deg] Telescope truss TST temperature TTRUWTBT [1]_ 10.9 float [deg] Telescope truss WTB temperature TTRUWTTT [1]_ 11.6 float [deg] Telescope truss WTT temperature ALARM [1]_ F bool UPS major alarm or check battery ALARM-ON [1]_ F bool UPS active alarm condition BATTERY [1]_ 100.0 float [%] UPS Battery left SECLEFT [1]_ 5772.0 float [s] UPS Seconds left UPSSTAT [1]_ System Normal - On Line(7) str UPS Status INAMPS [1]_ 64.3 float [A] UPS total input current OUTWATTS [1]_ 4500.0,6800.0,4100.0 str [W] UPS Phase A, B, C output watts COMPDEW [1]_ -12.0 float [deg C] Computer room dewpoint COMPHUM [1]_ 7.8 float [%] Computer room humidity COMPAMB [1]_ 19.4 float [deg C] Computer room ambient temperature COMPTEMP [1]_ 24.9 float [deg C] Computer room hygrometer temperature DEWPOINT [1]_ 5.7 float [deg C] (outside) dewpoint HUMIDITY [1]_ 7.0 float [%] (outside) humidity PRESSURE [1]_ 794.7 float [torr] (outside) air pressure OUTTEMP [1]_ 0.0 float [deg C] outside temperature WINDDIR [1]_ 82.0 float [deg] wind direction WINDSPD [1]_ 23.3 float [m/s] wind speed GUST [1]_ 18.1 float [m/s] Wind gusts speed AMNIENTN [1]_ 13.3 float [deg C] ambient temperature north CFLOOR [1]_ 8.1 float [deg C] temperature on C floor NWALLIN [1]_ 13.6 float [deg C] temperature at north wall inside NWALLOUT [1]_ 8.8 float [deg C] temperature at north wall outside WWALLIN [1]_ 12.8 float [deg C] temperature at west wall inside WWALLOUT [1]_ 9.4 float [deg C] temperature at west wall outside AMBIENTS [1]_ 14.6 float [deg C] ambient temperature south FLOOR [1]_ 12.3 float [deg C] temperature at floor (LCR) EWALLCMP [1]_ 10.2 float [deg C] temperature at east wall, computer room EWALLCOU [1]_ 9.5 float [deg C] temperature at east wall, Coude room ROOF [1]_ 10.0 float [deg C] temperature on roof ROOFAMB [1]_ 9.9 float [deg C] ambient temperature on roof DOMEBLOW [1]_ 12.1 float [deg C] temperature at dome back, lower DOMEBUP [1]_ 12.5 float [deg C] temperature at dome back, upper DOMELLOW [1]_ 14.4 float [deg C] temperature at dome left, lower DOMELUP [1]_ 19.3 float [deg C] temperature at dome left, upper DOMERLOW [1]_ 12.3 float [deg C] temperature at dome right, lower DOMERUP [1]_ 12.8 float [deg C] temperature at dome right, upper PLATFORM [1]_ 15.3 float [deg C] temperature at platform SHACKC [1]_ 15.2 float [deg C] temperature at shack ceiling SHACKW [1]_ 13.2 float [deg C] temperature at shack wall STAIRSL [1]_ 12.6 float [deg C] temperature at stairs, lower STAIRSM [1]_ 13.3 float [deg C] temperature at stairs, mid STAIRSU [1]_ 13.6 float [deg C] temperature at stairs, upper TELBASE [1]_ 8.5 float [deg C] temperature at telescope base UTILWALL [1]_ 11.6 float [deg C] temperature at utility room wall UTILROOM [1]_ 12.4 float [deg C] temperature in utilitiy room EXCLUDED str Components excluded from this exposure NSPEC 500 int Number of spectra WAVEMIN 5760.0 float First wavelength [Angstroms] WAVEMAX 7620.0 float Last wavelength [Angstroms] WAVESTEP 0.8 float Wavelength step size [Angstroms] SPECTER 0.10.0 str https://github.com/desihub/specter IN_PSF SPECPROD/exposures/20201220/00068979/psf-r8-00068979.fits str Input sp IN_IMG SPECPROD/preproc/20201220/00068979/preproc-r8-00068979.fits str ORIG_PSF SPECPROD/calibnight/20201220/psfnight-r8-20201220.fits str CHI2PDF 1.081598530118078 float BUNIT str adimensional quantity to divide to flatfield a frame SUNDEC [1]_ 18.640139 float [deg] Sun declination at start of exposure TCSKRA [1]_ 0.3 0.003 0.00003 str TCS Kalman (RA) SEQSTART [1]_ 2021-05-14T01:11:54.263801 str Start time of sequence processing TCSGDEC [1]_ 0.3 float TCS simple gain (dec) MOONSEP [1]_ 9.334 float [deg] Moon Separation TCSMFDEC [1]_ 1 int TCS moving filter length (dec) TCSMFRA [1]_ 1 int TCS moving filter length (RA) TCSGRA [1]_ 0.3 float TCS simple gain (RA) SUNRA [1]_ 51.089577 float [deg] Sun RA at start of exposure NTSSURVY [1]_ na str NTS survey name TCSKDEC [1]_ 0.3 0.003 0.00003 str TCS Kalman (dec) TCSPIDEC [1]_ 1.0,0.0,0.0,0.0 str TCS PI settings (P, I (gain, error window, satu TCSPIRA [1]_ 1.0,0.0,0.0,0.0 str TCS PI settings (P, I (gain, error window, satu TRANSPAR [1]_ None Unknown ETC/PM transparency PMSEEING [1]_ None Unknown [arcsec] PlateMaker GFAPROC seeing PMTRANSP [1]_ None Unknown [%] PlateMaker GFAPROC transparency SEEING [1]_ None Unknown [arcsec] ETC/PM seeing SKYLEVEL [1]_ 8.153 float [counts?] ETC sky level ============= ============================================================ ======= ==================================================== Data: FITS image [float32, 2881x500] HDU1 ---- EXTNAME = IVAR Inverse variance (1/sigma^2) of the fiber flat field in HDU0. Required Header Keywords ~~~~~~~~~~~~~~~~~~~~~~~~ .. collapse:: Required Header Keywords Table .. rst-class:: keywords ======== ================ ==== ============================================== KEY Example Value Type Comment ======== ================ ==== ============================================== NAXIS1 2881 int NAXIS2 500 int BUNIT str inverse variance, adimensional CHECKSUM 9PWhCOTZ9OTfAOTZ str HDU checksum updated 2021-07-07T18:12:11 DATASUM 1188137300 str data unit checksum updated 2021-07-07T18:12:11 ======== ================ ==== ============================================== Data: FITS image [float32, 2881x500] HDU2 ---- EXTNAME = MASK Mask of the fiberflat; 0=good. See the :doc:`bitmask documentation ` page for the definition of the bits. Prior to desispec/0.24.0 and software release 18.9, the MASK HDU was compressed. Required Header Keywords ~~~~~~~~~~~~~~~~~~~~~~~~ .. collapse:: Required Header Keywords Table .. rst-class:: keywords ======== ================ ==== ============================================== KEY Example Value Type Comment ======== ================ ==== ============================================== NAXIS1 2881 int Number of wavelengths NAXIS2 500 int Number of spectra BSCALE 1 int BZERO 2147483648 int CHECKSUM EGfjGGdhEGdhEGdh str HDU checksum updated 2021-07-07T18:12:11 DATASUM 722182 str data unit checksum updated 2021-07-07T18:12:11 ======== ================ ==== ============================================== Data: FITS image [int32, 2881x500] HDU3 ---- EXTNAME = MEANSPEC Average flat lamp spectrum of fibers in this camera frame. The fiber flat field is in first approximation the ratio of the measured spectra to this mean spectrum (in practice we use a deconvolved mean spectrum and reconvolve it with the resolution of each fiber). The units are electrons per Angstrom. Required Header Keywords ~~~~~~~~~~~~~~~~~~~~~~~~ .. collapse:: Required Header Keywords Table .. rst-class:: keywords ======== ================= ==== ============================================== KEY Example Value Type Comment ======== ================= ==== ============================================== NAXIS1 2881 int Number of wavelengths BUNIT electron/Angstrom str CHECKSUM CcfOCceNCceNCceN str HDU checksum updated 2021-07-07T18:12:12 DATASUM 1452506388 str data unit checksum updated 2021-07-07T18:12:12 ======== ================= ==== ============================================== Data: FITS image [float32, 2881] HDU4 ---- EXTNAME = WAVELENGTH Wavelength grid in Angstrom used by this fiber flat field. Note that contrary to the science frame, this wavelength array is in the observer frame. In consequence, one has to first convert its wavelength to the solar barycenter frame before using this data to flat field a science exposure. See the frame :ref:`WAVELENGTH documentation ` for more details. Required Header Keywords ~~~~~~~~~~~~~~~~~~~~~~~~ .. collapse:: Required Header Keywords Table .. rst-class:: keywords ======== ================ ==== ============================================== KEY Example Value Type Comment ======== ================ ==== ============================================== NAXIS1 2881 int BUNIT Angstrom str CHECKSUM kRaDlRa9kRaCkRa9 str HDU checksum updated 2021-07-07T18:12:12 DATASUM 153633556 str data unit checksum updated 2021-07-07T18:12:12 ======== ================ ==== ============================================== Data: FITS image [float32, 2881] HDU5 ---- EXTNAME = FIBERMAP Fibermap with information about the fiber status. Required Header Keywords ~~~~~~~~~~~~~~~~~~~~~~~~ .. collapse:: Required Header Keywords Table .. rst-class:: keywords ============= ============================================================ ======= ============================================== KEY Example Value Type Comment ============= ============================================================ ======= ============================================== NAXIS1 369 int length of dimension 1 NAXIS2 500 int length of dimension 2 EXPID 68979 int EXPFRAME 0 int FLAVOR science str SEQUENCE Spectrographs str PURPOSE Commissioning str PROGRAM CALIB DESI-CALIB-00 LEDs only str PROPID 2019B-5000 str OBSERVER DESIObserver str LEAD RunManager str INSTRUME DESI str OBSERVAT KPNO str OBS-LAT 31.96403 str OBS-LONG -111.59989 str OBS-ELEV 2097.0 float TELESCOP KPNO 4.0-m telescope str CORRCTOR DESI Corrector str NIGHT 20201220 int TIMESYS UTC str DATE-OBS 2020-12-20T22:24:15.672815 str TIME-OBS 22:24:15.672815 str MJD-OBS 59203.93351473 float ST 20:57:41.340 str EXPTIME 120.037 float DELTARA 0.0 float DELTADEC 0.0 float VCCD ON str VCCDON 2020-12-09T21:23:19.307761 str VCCDSEC 954226.0 float EQUINOX 2000.0 float SPECGRPH 8 int SPECID 2 int FEEBOX lbnl050 str VESSEL 8 int FEEVER v20160312 str DETFLVER [1]_ FAILED: invalid argument for get command str FEEPOWER ON str FEEDMASK 2134851391 int FEECMASK 1048575 int CCDTEMP -135.3315 float RADESYS FK5 str FILENAME /exposures/desi/specs/20201220/00068979/sp9-00068979.fits.fz str DOSVER trunk str OCSVER 1.2 float CONSTVER DESI:CURRENT str INIFILE /data/msdos/dos_home/architectures/kpno/desi.ini str AMPSECB [4114:2058, 1:2064] str DAC16 39.9961,39.3162 str CLOCK8 9.9992,2.9993 str PRRSECD [2193:4249, 4194:4194] str CCDPREP purge,clear str CLOCK10 9.9992,2.9993 str DAC17 20.0008,12.2488 str ORSECB [2193:4249, 2066:2097] str DAC15 0.0,0.0148 str ORSECD [2193:4249, 2098:2129] str DIGITIME 47.5846 float BIASSECA [2065:2128, 2:2065] str CLOCK9 9.9992,2.9993 str CLOCK18 9.0,0.9999 str CAMERA r8 str CLOCK17 9.0,0.9999 str CLOCK5 9.9999,0.0 str TRIMSECD [2193:4249, 2130:4193] str DETSECD [2058:4114, 2065:4128] str DAC0 -9.0002,-8.9507 str CLOCK15 9.9992,2.9993 str TRIMSECA [8:2064, 2:2065] str BIASSECB [2129:2192, 2:2065] str CLOCK11 9.9992,2.9993 str CLOCK12 9.9992,2.9993 str AMPSECD [4114:2058, 4128:2065] str CLOCK4 9.9999,0.0 str PRRSECB [2193:4249, 1:1] str CCDSECD [2058:4114, 2065:4128] str CCDTMING default_lbnl_timing_20180905.txt str TRIMSECB [2193:4249, 2:2065] str CCDSIZE 4194,4256 str PGAGAIN 3 int PRESECD [4250:4256, 2130:4193] str CLOCK6 9.9999,0.0 str CLOCK13 9.9992,2.9993 str DAC7 5.9998,6.028 str DATASECA [8:2064, 2:2065] str CRYOTEMP [1]_ 162.97 float OFFSET2 0.4000000059604645,-8.9198 str OFFSET6 2.0,6.0437 str DELAYS 20, 20, 25, 40, 7, 3000, 7, 7, 7, 7 str BIASSECD [2129:2192, 2130:4193] str PRRSECA [8:2064, 1:1] str TRIMSECC [8:2064, 2130:4193] str CLOCK3 -2.0001,3.9999 str CCDNAME CCDSM2R str DAC9 -25.0003,-24.768 str CCDSECC [1:2057, 2065:4128] str ORSECA [8:2064, 2066:2097] str DAC5 5.9998,6.0543 str CCDSECB [2058:4114, 1:2064] str DETSECB [2058:4114, 1:2064] str OFFSET0 0.4000000059604645,-8.9507 str SETTINGS detectors_sm_20191211.json str DAC11 -25.0003,-24.8422 str BIASSECC [2065:2128, 2130:4193] str CASETEMP 60.4294 float DAC10 -25.0003,-24.7086 str DAC1 -9.0002,-8.9198 str DAC14 0.0,0.0594 str DETECTOR M1-46 str CDSPARMS 400, 400, 8, 2000 str OFFSET3 0.4000000059604645,-8.8992 str DATASECB [2193:4249, 2:2065] str ORSECC [8:2064, 2098:2129] str CRYOPRES [1]_ 9.084e-08 str AMPSECA [1:2057, 1:2064] str OFFSET7 2.0,6.028 str DAC4 5.9998,6.028 str DATASECC [8:2064, 2130:4193] str PRESECC [1:7, 2130:4193] str CLOCK16 9.9999,3.0 str CLOCK1 9.9999,0.0 str PRESECB [4250:4256, 2:2065] str DAC12 0.0,0.0297 str DAC8 -25.0003,-24.9312 str OFFSET4 2.0,6.028 str DAC2 -9.0002,-8.9198 str CCDCFG default_lbnl_20190717.cfg str BLDTIME 0.3585 float PRESECA [1:7, 2:2065] str DATASECD [2193:4249, 2130:4193] str DETSECC [1:2057, 2065:4128] str PRRSECC [8:2064, 4194:4194] str DAC6 5.9998,6.0437 str DETSECA [1:2057, 1:2064] str CLOCK2 9.9999,0.0 str DAC3 -9.0002,-8.9095 str OFFSET1 0.4000000059604645,-8.9198 str AMPSECC [1:2057, 4128:2065] str CLOCK7 -2.0001,3.9999 str DAC13 0.0,0.0148 str CCDSECA [1:2057, 1:2064] str OFFSET5 2.0,6.0543 str CLOCK14 9.9992,2.9993 str CLOCK0 9.9999,0.0 str CPUTEMP 60.4394 float REQTIME 120.0 float OBSID kp4m20201220t222415 str PROCTYPE RAW str PRODTYPE image str GAINA 1.627 float SATULEVA 65535.0 float OSTEPA 0.632482737491955 float OMETHA AVERAGE str OVERSCNA 1984.644911356943 float OBSRDNA 2.480943789810065 float SATUELEA 103396.4277292223 float GAINB 1.482 float SATULEVB 65535.0 float OSTEPB 0.5400817486224696 float OMETHB AVERAGE str OVERSCNB 1980.886896481526 float OBSRDNB 2.179271146346672 float SATUELEB 94187.19561941437 float GAINC 1.581 float SATULEVC 65535.0 float OSTEPC 0.6331518428269192 float OMETHC AVERAGE str OVERSCNC 1965.76250622263 float OBSRDNC 2.484447923351728 float SATUELEC 100502.964477662 float GAIND 1.589 float SATULEVD 65535.0 float OSTEPD 0.6401253297517542 float OMETHD AVERAGE str OVERSCND 1987.590453491951 float OBSRDND 2.576419983467696 float SATUELED 100976.8337694013 float FIBERMIN 4000 int LONGSTRN OGIP 1.0 str MODULE CI str FRAMES None Unknown COSMSPLT F bool MAXSPLIT 0 int SPLITIDS [1]_ 68979 str OBSTYPE FLAT str MANIFEST F bool OBJECT str SEQID 3 requests str SEQNUM 2 int SEQTOT 3 int OPENSHUT None Unknown CAMSHUT open str WHITESPT [1]_ T bool ZENITH [1]_ F bool SEANNEX [1]_ F bool BEYONDP [1]_ F bool FIDUCIAL [1]_ off str AIRMASS [1]_ 1.521306 float FOCUS [1]_ 1163.9,-689.8,370.4,13.8,24.2,-0.0 str TRUSTEMP [1]_ 13.267 float PMIRTEMP [1]_ 7.35 float PMREADY [1]_ F bool PMCOVER [1]_ open str PMCOOL [1]_ on str DOMSHUTU [1]_ not open str DOMSHUTL [1]_ not open str DOMLIGHH [1]_ off str DOMLIGHL [1]_ off str DOMEAZ [1]_ 253.289 float DOMINPOS [1]_ F bool GUIDOFFR [1]_ 0.0 float GUIDOFFD [1]_ -0.0 float MOONDEC [1]_ -9.830944 float MOONRA [1]_ 350.511461 float MOUNTAZ [1]_ 73.49407 float MOUNTDEC [1]_ 31.962703 float MOUNTEL [1]_ 41.035778 float MOUNTHA [1]_ -58.479517 float INCTRL [1]_ F bool INPOS [1]_ T bool MNTOFFD [1]_ -0.0 float MNTOFFR [1]_ -0.0 float PARALLAC [1]_ -73.492813 float SKYDEC [1]_ 31.962703 float SKYRA [1]_ 12.901561 float TARGTDEC [1]_ 31.963299 float TARGTRA [1]_ 6.305086 float TARGTAZ [1]_ 75.558672 float TARGTEL [1]_ 46.429343 float TRGTOFFD [1]_ 0.0 float TRGTOFFR [1]_ 0.0 float ZD [1]_ 48.964222 float TCSST [1]_ 20:57:41.291 str TCSMJD [1]_ 59203.933945 float ADCCORR F bool ADC1PHI [1]_ 114.980003 float ADC2PHI [1]_ 162.869907 float ADC1HOME [1]_ F bool ADC2HOME [1]_ F bool ADC1NREV [1]_ 0.0 float ADC2NREV [1]_ -1.0 float ADC1STAT [1]_ STOPPED str ADC2STAT [1]_ STOPPED str HEXPOS [1]_ 1163.9,-689.8,370.4,13.8,24.2,-0.0 str HEXTRIM [1]_ 0.0,0.0,0.0,0.0,0.0,0.0 str ROTOFFST [1]_ 0.0 float ROTENBLD [1]_ T bool ROTRATE [1]_ 0.0 float RESETROT F bool GUIDMODE catalog str USEAOS [1]_ F bool SPCGRPHS SP0,SP1,SP2,SP3,SP4,SP5,SP6,SP7,SP8,SP9 str ILLSPECS [1]_ SP0,SP1,SP2,SP3,SP4,SP5,SP6,SP7,SP8,SP9 str CCDSPECS [1]_ SP0,SP1,SP2,SP3,SP4,SP5,SP6,SP7,SP8,SP9 str TDEWPNT [1]_ -18.2 float TAIRFLOW [1]_ 1.121 float TAIRITMP [1]_ 10.5 float TAIROTMP [1]_ 5.5 float TAIRTEMP [1]_ 11.86 float TCASITMP [1]_ 0.0 float TCASOTMP [1]_ 9.6 float TCSITEMP [1]_ 7.4 float TCSOTEMP [1]_ 10.2 float TCIBTEMP [1]_ 0.0 float TCIMTEMP [1]_ 0.0 float TCITTEMP [1]_ 0.0 float TCOSTEMP [1]_ 0.0 float TCOWTEMP [1]_ 0.0 float TDBTEMP [1]_ 7.4 float TFLOWIN [1]_ 7.7 float TFLOWOUT [1]_ 8.3 float TGLYCOLI [1]_ -1.8 float TGLYCOLO [1]_ 0.0 float THINGES [1]_ 12.9 float THINGEW [1]_ 11.7 float TPMAVERT [1]_ 7.304 float TPMDESIT [1]_ 7.0 float TPMEIBT [1]_ 7.3 float TPMEITT [1]_ 7.3 float TPMEOBT [1]_ 7.4 float TPMEOTT [1]_ 7.2 float TPMNIBT [1]_ 7.4 float TPMNITT [1]_ 7.3 float TPMNOBT [1]_ 7.7 float TPMNOTT [1]_ 7.6 float TPMRTDT [1]_ 6.96 float TPMSIBT [1]_ 7.4 float TPMSITT [1]_ 7.0 float TPMSOBT [1]_ 7.4 float TPMSOTT [1]_ 7.2 float TPMSTAT [1]_ soft air str TPMWIBT [1]_ 7.2 float TPMWITT [1]_ 7.1 float TPMWOBT [1]_ 7.6 float TPMWOTT [1]_ 8.1 float TPCITEMP [1]_ 7.7 float TPCOTEMP [1]_ 7.7 float TPR1HUM [1]_ 0.0 float TPR1TEMP [1]_ 0.0 float TPR2HUM [1]_ 0.0 float TPR2TEMP [1]_ 0.0 float TSERVO [1]_ 7.0 float TTRSTEMP [1]_ 13.2 float TTRWTEMP [1]_ 13.4 float TTRUETBT [1]_ -4.8 float TTRUETTT [1]_ 11.5 float TTRUNTBT [1]_ 10.9 float TTRUNTTT [1]_ 11.8 float TTRUSTBT [1]_ 11.1 float TTRUSTST [1]_ 10.8 float TTRUSTTT [1]_ 12.4 float TTRUTSBT [1]_ 13.6 float TTRUTSMT [1]_ 13.7 float TTRUTSTT [1]_ 12.5 float TTRUWTBT [1]_ 10.9 float TTRUWTTT [1]_ 11.6 float ALARM [1]_ F bool ALARM-ON [1]_ F bool BATTERY [1]_ 100.0 float SECLEFT [1]_ 5772.0 float UPSSTAT [1]_ System Normal - On Line(7) str INAMPS [1]_ 64.3 float OUTWATTS [1]_ 4500.0,6800.0,4100.0 str COMPDEW [1]_ -12.0 float COMPHUM [1]_ 7.8 float COMPAMB [1]_ 19.4 float COMPTEMP [1]_ 24.9 float DEWPOINT [1]_ 5.7 float HUMIDITY [1]_ 7.0 float PRESSURE [1]_ 794.7 float OUTTEMP [1]_ 0.0 float WINDDIR [1]_ 82.0 float WINDSPD [1]_ 23.3 float GUST [1]_ 18.1 float AMNIENTN [1]_ 13.3 float CFLOOR [1]_ 8.1 float NWALLIN [1]_ 13.6 float NWALLOUT [1]_ 8.8 float WWALLIN [1]_ 12.8 float WWALLOUT [1]_ 9.4 float AMBIENTS [1]_ 14.6 float FLOOR [1]_ 12.3 float EWALLCMP [1]_ 10.2 float EWALLCOU [1]_ 9.5 float ROOF [1]_ 10.0 float ROOFAMB [1]_ 9.9 float DOMEBLOW [1]_ 12.1 float DOMEBUP [1]_ 12.5 float DOMELLOW [1]_ 14.4 float DOMELUP [1]_ 19.3 float DOMERLOW [1]_ 12.3 float DOMERUP [1]_ 12.8 float PLATFORM [1]_ 15.3 float SHACKC [1]_ 15.2 float SHACKW [1]_ 13.2 float STAIRSL [1]_ 12.6 float STAIRSM [1]_ 13.3 float STAIRSU [1]_ 13.6 float TELBASE [1]_ 8.5 float UTILWALL [1]_ 11.6 float UTILROOM [1]_ 12.4 float EXCLUDED str ENCODING ascii str CHECKSUM 94VhG2Tf92TfG2Tf str HDU checksum updated 2022-01-29T01:14:37 DATASUM 3660988593 str data unit checksum updated 2022-01-29T01:14:37 SUNDEC [1]_ 18.640139 float TCSKRA [1]_ 0.3 0.003 0.00003 str SEQSTART [1]_ 2021-05-14T01:11:54.263801 str TCSGDEC [1]_ 0.3 float MOONSEP [1]_ 9.334 float TCSMFDEC [1]_ 1 int TCSMFRA [1]_ 1 int TCSGRA [1]_ 0.3 float SUNRA [1]_ 51.089577 float NTSSURVY [1]_ na str TCSKDEC [1]_ 0.3 0.003 0.00003 str TCSPIDEC [1]_ 1.0,0.0,0.0,0.0 str TCSPIRA [1]_ 1.0,0.0,0.0,0.0 str TRANSPAR [1]_ None Unknown PMSEEING [1]_ None Unknown PMTRANSP [1]_ None Unknown SEEING [1]_ None Unknown SKYLEVEL [1]_ 8.153 float ============= ============================================================ ======= ============================================== Required Data Table Columns ~~~~~~~~~~~~~~~~~~~~~~~~~~~ .. rst-class:: columns ===================== ======= ============ ======================================================================================================================================= Name Type Units Description ===================== ======= ============ ======================================================================================================================================= TARGETID int64 Unique DESI target ID PETAL_LOC int16 Petal location [0-9] DEVICE_LOC int32 Device location on focal plane [0-523] LOCATION int64 Location on the focal plane PETAL_LOC*1000 + DEVICE_LOC FIBER int32 Fiber ID on the CCDs [0-4999] FIBERSTATUS int32 Fiber status mask. 0=good TARGET_RA float64 deg Barycentric right ascension in ICRS TARGET_DEC float64 deg Barycentric declination in ICRS PMRA float32 mas yr^-1 proper motion in the +RA direction (already including cos(dec)) PMDEC float32 mas yr^-1 Proper motion in the +Dec direction REF_EPOCH float32 yr Reference epoch for Gaia/Tycho astrometry. Typically 2015.5 for Gaia LAMBDA_REF float32 Angstrom Requested wavelength at which targets should be centered on fibers FA_TARGET int64 Targeting bit internally used by fiberassign (linked with FA_TYPE) FA_TYPE binary Fiberassign internal target type (science, standard, sky, safe, suppsky) OBJTYPE char[3] Object type: TGT, SKY, NON, BAD FIBERASSIGN_X float32 mm Fiberassign expected CS5 X location on focal plane FIBERASSIGN_Y float32 mm Fiberassign expected CS5 Y location on focal plane PRIORITY int32 Target current priority SUBPRIORITY float64 Random subpriority [0-1) to break assignment ties OBSCONDITIONS int32 Bitmask of allowed observing conditions RELEASE int16 Imaging surveys release ID BRICKNAME char[8] Brick name from tractor input BRICKID int64 Brick ID from tractor input BRICK_OBJID int64 Imaging Surveys OBJID on that brick MORPHTYPE char[4] Imaging Surveys morphological type from Tractor EBV float32 mag Galactic extinction E(B-V) reddening from SFD98 FLUX_G float32 nanomaggy Flux in the Legacy Survey g-band (AB) FLUX_R float32 nanomaggy Flux in the Legacy Survey r-band (AB) FLUX_Z float32 nanomaggy Flux in the Legacy Survey z-band (AB) FLUX_W1 float32 nanomaggy WISE flux in W1 (AB) FLUX_W2 float32 nanomaggy WISE flux in W2 (AB) FLUX_IVAR_G float32 nanomaggy^-2 Inverse variance of FLUX_G (AB) FLUX_IVAR_R float32 nanomaggy^-2 Inverse variance of FLUX_R (AB) FLUX_IVAR_Z float32 nanomaggy^-2 Inverse variance of FLUX_Z (AB) FLUX_IVAR_W1 float32 nanomaggy^-2 Inverse variance of FLUX_W1 (AB) FLUX_IVAR_W2 float32 nanomaggy^-2 Inverse variance of FLUX_W2 (AB) FIBERFLUX_G float32 nanomaggy Predicted g-band flux within a fiber of diameter 1.5 arcsec from this object in 1 arcsec Gaussian seeing FIBERFLUX_R float32 nanomaggy Predicted r-band flux within a fiber of diameter 1.5 arcsec from this object in 1 arcsec Gaussian seeing FIBERFLUX_Z float32 nanomaggy Predicted z-band flux within a fiber of diameter 1.5 arcsec from this object in 1 arcsec Gaussian seeing FIBERTOTFLUX_G float32 nanomaggy Predicted g-band flux within a fiber of diameter 1.5 arcsec from all sources at this location in 1 arcsec Gaussian seeing FIBERTOTFLUX_R float32 nanomaggy Predicted r-band flux within a fiber of diameter 1.5 arcsec from all sources at this location in 1 arcsec Gaussian seeing FIBERTOTFLUX_Z float32 nanomaggy Predicted z-band flux within a fiber of diameter 1.5 arcsec from all sources at this location in 1 arcsec Gaussian seeing MASKBITS int16 Bitwise mask from the imaging indicating potential issue or blending SERSIC float32 Power-law index for the Sersic profile model (MORPHTYPE='SER') SHAPE_R float32 arcsec Half-light radius of galaxy model (>0) SHAPE_E1 float32 Ellipticity component 1 of galaxy model for galaxy type MORPHTYPE SHAPE_E2 float32 Ellipticity component 2 of galaxy model for galaxy type MORPHTYPE REF_ID int64 Tyc1*1,000,000+Tyc2*10+Tyc3 for Tycho-2; ``sourceid`` for Gaia DR2 REF_CAT char[2] Reference catalog source for star: 'T2' for Tycho-2, 'G2' for Gaia DR2, 'L2' for the SGA, empty otherwise GAIA_PHOT_G_MEAN_MAG float32 mag Gaia G band magnitude GAIA_PHOT_BP_MEAN_MAG float32 mag Gaia BP band magnitude GAIA_PHOT_RP_MEAN_MAG float32 mag Gaia RP band magnitude PARALLAX float32 mas Reference catalog parallax PHOTSYS char[1] 'N' for the MzLS/BASS photometric system, 'S' for DECaLS PRIORITY_INIT int64 Target initial priority from target selection bitmasks and OBSCONDITIONS NUMOBS_INIT int64 Initial number of observations for target calculated across target selection bitmasks and OBSCONDITIONS DESI_TARGET int64 DESI (dark time program) target selection bitmask BGS_TARGET int64 BGS (Bright Galaxy Survey) target selection bitmask MWS_TARGET int64 Milky Way Survey targeting bits SCND_TARGET int64 Target selection bitmask for secondary programs PLATE_RA float64 deg Barycentric Right Ascension in ICRS to be used by PlateMaker PLATE_DEC float64 deg Barycentric Declination in ICRS to be used by PlateMaker NUM_ITER int64 Number of positioner iterations FIBER_X float64 mm CS5 X location requested by PlateMaker FIBER_Y float64 mm CS5 Y location requested by PlateMaker DELTA_X float64 mm CS5 X requested minus actual position DELTA_Y float64 mm CS5 Y requested minus actual position FIBER_RA float64 deg RA of actual fiber position FIBER_DEC float64 deg DEC of actual fiber position EXPTIME float64 s Length of time shutter was open ===================== ======= ============ ======================================================================================================================================= .. [1] Optional