======================= fiberassign-TILEID.fits ======================= :Summary: The fiberassign file contains the fiber positioner configuration information for each exposure: what fiber is placed where, what target that is, etc. The uncompressed version may contain extra HDUs relative to the compressed version. :Naming Convention: ``fiberassign-TILEID.fits``, where TILEID is the zero-padded 6-digit tile ID. :Regex: ``fiberassign-[0-9]{6}\.fits`` :File Type: FITS, 42 MB Contents ======== ====== ===================== ======== =================== Number EXTNAME Type Contents ====== ===================== ======== =================== HDU0_ PRIMARY IMAGE Keywords only HDU1_ FIBERASSIGN BINTABLE Target assignments for each fiber HDU2_ SKY_MONITOR BINTABLE Sky location for the 20 sky monitor fibers used by the ETC HDU3_ GFA_TARGETS BINTABLE Selected star for the ETC / GUIDE / FOCUS HDU4_ TARGETS BINTABLE List of targets that are reachable by a positioner HDU5_ POTENTIAL_ASSIGNMENTS BINTABLE All possible (TARGETID, FIBER, LOCATION) assignments HDU6_ FASSIGN BINTABLE Short version of FIBERASSIGN HDU7_ FTARGETS BINTABLE Short version of TARGETS HDU8_ FAVAIL BINTABLE Equivalent to POTENTIAL_ASSIGNMENTS ====== ===================== ======== =================== FITS Header Units ================= HDU0 ---- EXTNAME = PRIMARY No data, but some useful header keywords. Required Header Keywords ~~~~~~~~~~~~~~~~~~~~~~~~ .. collapse:: Required Header Keywords Table .. rst-class:: keywords ======== ======================= ===== ======= KEY Example Value Type Comment ======== ======================= ===== ======= FA_VER 1.2.1.dev2478 str Fiberassign code version FIELDNUM 0 int Not used, always zero TILEDEC 28.12 float [deg] Tile Declination FA_SURV main str Survey of origin of the targets TILEID 59096 int Tile ID FA_HA 0.0 float [deg] Design Hour Angle FIELDROT 0.0 float [deg] Field rotation REQRA 348.12 float [deg] Tile Right Ascension REQDEC 28.12 float [deg] Tile Declination FA_DATE 2022-07-01T00:00:00.000 str [UTC] Plan field rotations for this date TILERA 348.12 float [deg] Tile Right Ascension ======== ======================= ===== ======= Empty HDU. HDU1 ---- EXTNAME = FIBERASSIGN The target assignments for each fiber of this tile. Required Header Keywords ~~~~~~~~~~~~~~~~~~~~~~~~ .. collapse:: Required Header Keywords Table .. rst-class:: keywords ======== ======================= ===== ======================= KEY Example Value Type Comment ======== ======================= ===== ======================= NAXIS1 204 int width of table in bytes NAXIS2 5000 int number of rows in table FA_VER 1.2.1.dev2478 str Fiberassign code version FIELDNUM 0 int Not used, always zero TILEDEC 28.12 float [deg] Tile Declination FA_SURV main str Survey of origin of the targets TILEID 59096 int Tile ID FA_HA 0.0 float [deg] Design Hour Angle FIELDROT 0.0 float [deg] Field rotation REQRA 348.12 float [deg] Tile Right Ascension REQDEC 28.12 float [deg] Tile Declination FA_DATE 2022-07-01T00:00:00.000 str [UTC] Plan field rotations for this date TILERA 348.12 float [deg] Tile Right Ascension ======== ======================= ===== ======================= 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 int32 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 PMRA_IVAR float32 yr^2 mas^-2 Inverse variance of PMRA PMDEC_IVAR float32 yr^2 mas^-2 Inverse variance of PMDEC 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 NUMTARGET int16 Total number of targets that this positioner covered PRIORITY int32 Target current priority SUBPRIORITY float64 Random subpriority [0-1) to break assignment ties OBSCONDITIONS int32 Bitmask of allowed observing conditions NUMOBS_MORE int32 Number of additional observations needed RELEASE int32 Imaging surveys release ID BRICKID int32 Brick ID from tractor input BRICKNAME char[8] Brick name from tractor input BRICK_OBJID int32 Imaging Surveys OBJID on that brick BLOBDIST float32 pix Maximum distance from a detected Legacy Surveys source 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 FIBERFLUX_IVAR_G float32 nanomaggy^-2 Inverse variance of ``FIBERFLUX_G`` FIBERFLUX_IVAR_R float32 nanomaggy^-2 Inverse variance of ``FIBERFLUX_R`` FIBERFLUX_IVAR_Z float32 nanomaggy^-2 Inverse variance of ``FIBERFLUX_Z`` 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 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 HPXPIXEL int64 HEALPixel containing this location at NSIDE=64 in the NESTED scheme ================ ======= ============ ======================================================================================================== HDU2 ---- EXTNAME = SKY_MONITOR Blank sky assignments for sky monitor positioners. Required Header Keywords ~~~~~~~~~~~~~~~~~~~~~~~~ .. collapse:: Required Header Keywords Table .. rst-class:: keywords ======== ======================= ===== ======================= KEY Example Value Type Comment ======== ======================= ===== ======================= NAXIS1 113 int width of table in bytes NAXIS2 20 int number of rows in table FA_VER 1.2.1.dev2478 str Fiberassign code version FIELDNUM 0 int Not used, always zero TILEDEC 28.12 float [deg] Tile Declination FA_SURV main str Survey of origin of the targets TILEID 59096 int Tile ID FA_HA 0.0 float [deg] Design Hour Angle FIELDROT 0.0 float [deg] Field rotation REQRA 348.12 float [deg] Tile Right Ascension REQDEC 28.12 float [deg] Tile Declination FA_DATE 2022-07-01T00:00:00.000 str [UTC] Plan field rotations for this date TILERA 348.12 float [deg] Tile Right Ascension ======== ======================= ===== ======================= Required Data Table Columns ~~~~~~~~~~~~~~~~~~~~~~~~~~~ .. rst-class:: columns ================ ======= ============ ======================================================================================================== Name Type Units Description ================ ======= ============ ======================================================================================================== FIBER int32 Fiber ID on the CCDs [0-4999] LOCATION int32 Location on the focal plane PETAL_LOC*1000 + DEVICE_LOC NUMTARGET int16 Total number of targets that this positioner covered TARGETID int64 Unique DESI target ID BRICKID int32 Brick ID from tractor input BRICK_OBJID int32 Imaging Surveys OBJID on that brick 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) TARGET_RA float64 deg Barycentric right ascension in ICRS TARGET_DEC float64 deg Barycentric declination in ICRS FIBERASSIGN_X float32 mm Fiberassign expected CS5 X location on focal plane FIBERASSIGN_Y float32 mm Fiberassign expected CS5 Y location on focal plane BRICKNAME char[8] Brick name from tractor input FIBERSTATUS int32 Fiber status mask. 0=good PETAL_LOC int16 Petal location [0-9] DEVICE_LOC int32 Device location on focal plane [0-523] PRIORITY int32 Target current priority SUBPRIORITY float64 Random subpriority [0-1) to break assignment ties 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 FIBERFLUX_IVAR_G float32 nanomaggy^-2 Inverse variance of ``FIBERFLUX_G`` FIBERFLUX_IVAR_R float32 nanomaggy^-2 Inverse variance of ``FIBERFLUX_R`` FIBERFLUX_IVAR_Z float32 nanomaggy^-2 Inverse variance of ``FIBERFLUX_Z`` ================ ======= ============ ======================================================================================================== HDU3 ---- EXTNAME = GFA_TARGETS GFA stars to be used by the ETC / GUIDE / FOCUS Required Header Keywords ~~~~~~~~~~~~~~~~~~~~~~~~ .. collapse:: Required Header Keywords Table .. rst-class:: keywords ======== ======================= ===== ======================= KEY Example Value Type Comment ======== ======================= ===== ======================= NAXIS1 166 int width of table in bytes NAXIS2 1873 int number of rows in table FA_VER 1.2.1.dev2478 str Fiberassign code version FIELDNUM 0 int Not used, always zero TILEDEC 28.12 float [deg] Tile Declination FA_SURV main str Survey of origin of the targets TILEID 59096 int Tile ID FA_HA 0.0 float [deg] Design Hour Angle FIELDROT 0.0 float [deg] Field rotation REQRA 348.12 float [deg] Tile Right Ascension REQDEC 28.12 float [deg] Tile Declination FA_DATE 2022-07-01T00:00:00.000 str [UTC] Plan field rotations for this date TILERA 348.12 float [deg] Tile Right Ascension ======== ======================= ===== ======================= Required Data Table Columns ~~~~~~~~~~~~~~~~~~~~~~~~~~~ .. rst-class:: columns ================================= ======= ============ ======================================================================================================================================= Name Type Units Description ================================= ======= ============ ======================================================================================================================================= RELEASE int32 Imaging surveys release ID TARGETID int64 Unique DESI target ID BRICKID int32 Brick ID from tractor input BRICK_OBJID int32 Imaging Surveys OBJID on that brick TARGET_RA float64 deg Barycentric right ascension in ICRS TARGET_DEC float64 deg Barycentric declination in ICRS TARGET_RA_IVAR float32 label for field 7 TARGET_DEC_IVAR float32 label for field 8 MORPHTYPE char[4] Imaging Surveys morphological type from Tractor 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_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) 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 REF_EPOCH float32 yr Reference epoch for Gaia/Tycho astrometry. Typically 2015.5 for Gaia PARALLAX float32 mas Reference catalog parallax PARALLAX_IVAR float32 mas^-2 Inverse variance of PARALLAX 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 PMRA_IVAR float32 yr^2 mas^-2 Inverse variance of PMRA PMDEC_IVAR float32 yr^2 mas^-2 Inverse variance of PMDEC GAIA_PHOT_G_MEAN_MAG float32 mag Gaia G band magnitude GAIA_PHOT_G_MEAN_FLUX_OVER_ERROR float32 Gaia G band signal-to-noise GAIA_PHOT_BP_MEAN_MAG float32 mag Gaia BP band magnitude GAIA_PHOT_BP_MEAN_FLUX_OVER_ERROR float32 Gaia BP band signal-to-noise GAIA_PHOT_RP_MEAN_MAG float32 mag Gaia RP band magnitude GAIA_PHOT_RP_MEAN_FLUX_OVER_ERROR float32 Gaia RP band signal-to-noise GAIA_ASTROMETRIC_EXCESS_NOISE float32 Gaia astrometric excess noise URAT_ID int64 ID in the URAT catalog for sources where URAT supplemented missing Gaia astrometric information URAT_SEP float32 arcsec Separation between URAT and Gaia sources where URAT supplemented missing Gaia astrometric information HPXPIXEL int64 HEALPixel containing this location at NSIDE=64 in the NESTED scheme GFA_LOC int16 label for field 35 ETC_FLAG int16 label for field 36 GUIDE_FLAG int16 label for field 37 FOCUS_FLAG int16 label for field 38 ================================= ======= ============ ======================================================================================================================================= HDU4 ---- EXTNAME = TARGETS Unique list of targets reachable by a positioner. Required Header Keywords ~~~~~~~~~~~~~~~~~~~~~~~~ .. collapse:: Required Header Keywords Table .. rst-class:: keywords ======== ======================= ===== ======================= KEY Example Value Type Comment ======== ======================= ===== ======================= NAXIS1 204 int width of table in bytes NAXIS2 145163 int number of rows in table FA_VER 1.2.1.dev2478 str Fiberassign code version FIELDNUM 0 int Not used, always zero TILEDEC 28.12 float [deg] Tile Declination FA_SURV main str Survey of origin of the targets TILEID 59096 int Tile ID FA_HA 0.0 float [deg] Design Hour Angle FIELDROT 0.0 float [deg] Field rotation REQRA 348.12 float [deg] Tile Right Ascension REQDEC 28.12 float [deg] Tile Declination FA_DATE 2022-07-01T00:00:00.000 str [UTC] Plan field rotations for this date TILERA 348.12 float [deg] Tile Right Ascension ======== ======================= ===== ======================= 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 int32 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 RA float64 deg Barycentric Right Ascension in ICRS 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 PMRA_IVAR float32 yr^2 mas^-2 Inverse variance of PMRA PMDEC_IVAR float32 yr^2 mas^-2 Inverse variance of PMDEC 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 NUMTARGET int16 Total number of targets that this positioner covered PRIORITY int32 Target current priority SUBPRIORITY float64 Random subpriority [0-1) to break assignment ties OBSCONDITIONS int32 Bitmask of allowed observing conditions NUMOBS_MORE int32 Number of additional observations needed RELEASE int32 Imaging surveys release ID BRICKID int32 Brick ID from tractor input BRICKNAME char[8] Brick name from tractor input BRICK_OBJID int32 Imaging Surveys OBJID on that brick BLOBDIST float32 pix Maximum distance from a detected Legacy Surveys source APFLUX_G float32 nanomaggy Total flux in nanomaggies extracted in a 0.75 arcsec radius in the g band at this location APFLUX_R float32 nanomaggy Total flux in nanomaggies extracted in a 0.75 arcsec radius in the r band at this location APFLUX_Z float32 nanomaggy Total flux in nanomaggies extracted in a 0.75 arcsec radius in the z band at this location APFLUX_IVAR_G float32 nanomaggy^-2 Inverse variance of APFLUX_G APFLUX_IVAR_R float32 nanomaggy^-2 Inverse variance of APFLUX_R APFLUX_IVAR_Z float32 nanomaggy^-2 Inverse variance of APFLUX_Z 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 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 HPXPIXEL int64 HEALPixel containing this location at NSIDE=64 in the NESTED scheme ============= ======= ============ ======================================================================================================= HDU5 ---- EXTNAME = POTENTIAL_ASSIGNMENTS A list of targets that could have been assigned to each fiber. Required Header Keywords ~~~~~~~~~~~~~~~~~~~~~~~~ .. collapse:: Required Header Keywords Table .. rst-class:: keywords ======== ======================= ===== ======================= KEY Example Value Type Comment ======== ======================= ===== ======================= NAXIS1 16 int width of table in bytes NAXIS2 163503 int number of rows in table FA_VER 1.2.1.dev2478 str Fiberassign code version FIELDNUM 0 int Not used, always zero TILEDEC 28.12 float [deg] Tile Declination FA_SURV main str Survey of origin of the targets TILEID 59096 int Tile ID FA_HA 0.0 float [deg] Design Hour Angle FIELDROT 0.0 float [deg] Field rotation REQRA 348.12 float [deg] Tile Right Ascension REQDEC 28.12 float [deg] Tile Declination FA_DATE 2022-07-01T00:00:00.000 str [UTC] Plan field rotations for this date TILERA 348.12 float [deg] Tile Right Ascension ======== ======================= ===== ======================= Required Data Table Columns ~~~~~~~~~~~~~~~~~~~~~~~~~~~ .. rst-class:: columns ======== ===== ===== ======================================================= Name Type Units Description ======== ===== ===== ======================================================= TARGETID int64 Unique DESI target ID FIBER int32 Fiber ID on the CCDs [0-4999] LOCATION int32 Location on the focal plane PETAL_LOC*1000 + DEVICE_LOC ======== ===== ===== ======================================================= HDU6 ---- EXTNAME = FASSIGN Short version of FIBERASSIGN. Required Header Keywords ~~~~~~~~~~~~~~~~~~~~~~~~ .. collapse:: Required Header Keywords Table .. rst-class:: keywords ======== ======================= ===== ======================= KEY Example Value Type Comment ======== ======================= ===== ======================= NAXIS1 66 int width of table in bytes NAXIS2 5020 int number of rows in table FA_VER 1.2.1.dev2478 str Fiberassign code version FIELDNUM 0 int Not used, always zero TILEDEC 28.12 float [deg] Tile Declination FA_SURV main str Survey of origin of the targets TILEID 59096 int Tile ID FA_HA 0.0 float [deg] Design Hour Angle FIELDROT 0.0 float [deg] Field rotation REQRA 348.12 float [deg] Tile Right Ascension REQDEC 28.12 float [deg] Tile Declination FA_DATE 2022-07-01T00:00:00.000 str [UTC] Plan field rotations for this date TILERA 348.12 float [deg] Tile Right Ascension ======== ======================= ===== ======================= Required Data Table Columns ~~~~~~~~~~~~~~~~~~~~~~~~~~~ .. rst-class:: columns ============= ======= ======== ======================================================================== Name Type Units Description ============= ======= ======== ======================================================================== FIBER int32 Fiber ID on the CCDs [0-4999] TARGETID int64 Unique DESI target ID LOCATION int32 Location on the focal plane PETAL_LOC*1000 + DEVICE_LOC FIBERSTATUS int32 Fiber status mask. 0=good LAMBDA_REF float32 Angstrom Requested wavelength at which targets should be centered on fibers PETAL_LOC int16 Petal location [0-9] DEVICE_LOC int32 Device location on focal plane [0-523] DEVICE_TYPE char[3] Device type TARGET_RA float64 deg Barycentric right ascension in ICRS TARGET_DEC float64 deg Barycentric declination in ICRS 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) FIBERASSIGN_X float32 mm Fiberassign expected CS5 X location on focal plane FIBERASSIGN_Y float32 mm Fiberassign expected CS5 Y location on focal plane ============= ======= ======== ======================================================================== HDU7 ---- EXTNAME = FTARGETS Short version of TARGETS. Required Header Keywords ~~~~~~~~~~~~~~~~~~~~~~~~ .. collapse:: Required Header Keywords Table .. rst-class:: keywords ======== ======================= ===== ======================= KEY Example Value Type Comment ======== ======================= ===== ======================= NAXIS1 53 int width of table in bytes NAXIS2 145163 int number of rows in table FA_VER 1.2.1.dev2478 str Fiberassign code version FIELDNUM 0 int Not used, always zero TILEDEC 28.12 float [deg] Tile Declination FA_SURV main str Survey of origin of the targets TILEID 59096 int Tile ID FA_HA 0.0 float [deg] Design Hour Angle FIELDROT 0.0 float [deg] Field rotation REQRA 348.12 float [deg] Tile Right Ascension REQDEC 28.12 float [deg] Tile Declination FA_DATE 2022-07-01T00:00:00.000 str [UTC] Plan field rotations for this date TILERA 348.12 float [deg] Tile Right Ascension ======== ======================= ===== ======================= Required Data Table Columns ~~~~~~~~~~~~~~~~~~~~~~~~~~~ .. rst-class:: columns ============= ======= ===== ======================================================================== Name Type Units Description ============= ======= ===== ======================================================================== TARGETID int64 Unique DESI target ID TARGET_RA float64 deg Barycentric right ascension in ICRS TARGET_DEC float64 deg Barycentric declination in ICRS 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) PRIORITY int32 Target current priority SUBPRIORITY float64 Random subpriority [0-1) to break assignment ties OBSCONDITIONS int32 Bitmask of allowed observing conditions NUMOBS_MORE int32 Number of additional observations needed ============= ======= ===== ======================================================================== HDU8 ---- EXTNAME = FAVAIL Equivalent to POTENTIAL_ASSIGNMENTS. Required Header Keywords ~~~~~~~~~~~~~~~~~~~~~~~~ .. collapse:: Required Header Keywords Table .. rst-class:: keywords ======== ======================= ===== ======================= KEY Example Value Type Comment ======== ======================= ===== ======================= NAXIS1 16 int width of table in bytes NAXIS2 163503 int number of rows in table FA_VER 1.2.1.dev2478 str Fiberassign code version FIELDNUM 0 int Not used, always zero TILEDEC 28.12 float [deg] Tile Declination FA_SURV main str Survey of origin of the targets TILEID 59096 int Tile ID FA_HA 0.0 float [deg] Design Hour Angle FIELDROT 0.0 float [deg] Field rotation REQRA 348.12 float [deg] Tile Right Ascension REQDEC 28.12 float [deg] Tile Declination FA_DATE 2022-07-01T00:00:00.000 str [UTC] Plan field rotations for this date TILERA 348.12 float [deg] Tile Right Ascension ======== ======================= ===== ======================= Required Data Table Columns ~~~~~~~~~~~~~~~~~~~~~~~~~~~ .. rst-class:: columns ======== ===== ===== ======================================================= Name Type Units Description ======== ===== ===== ======================================================= LOCATION int32 Location on the focal plane PETAL_LOC*1000 + DEVICE_LOC FIBER int32 Fiber ID on the CCDs [0-4999] TARGETID int64 Unique DESI target ID ======== ===== ===== =======================================================