================== sv3mtl-dark-hp-HPX ================== :Summary: MTL ledgers for the DESI dark-time program (secondary targets). :Naming Convention: ``sv3mtl-dark-hp-HPX.ecsv``, where HPX is the nside=32 (NESTED) HEALPixel integer. :Regex: ``sv3mtl-dark-hp-[0-12287]\.ecsv`` :File Type: ecsv, 100-600 KB Contents ======== ========== ======== ========== EXTNAME Type Contents ========== ======== ========== MTL TABLE MTL Ledger ========== ======== ========== Required Header Keywords ~~~~~~~~~~~~~~~~~~~~~~~~ ======== ===================================== ==== ============================================================================ KEY Example Value Type Comment ======== ===================================== ==== ============================================================================ DR 9 int Legacy Surveys Data Release (meaningless for secondary targets) FILEHPX 7031 int HEALPixel integer for the file FILENEST True bool If the HEALPixel NESTED scheme was used for the file (should always be True) FILENSID 32 int HEALPixel nside used for the file (should always be 32) INDIR dr9/0.57.0/targets/sv3/secondary/dark str Location of the directory of targets used to produce the file OBSCON DARK str DESI program (DARK, BRIGHT or BACKUP) SCND True bool Whether the file is a ledger of primary or secondary targets SURVEY sv3 str DESI survey phase (main, sv2 or sv3) ======== ===================================== ==== ============================================================================ Required Data Table Columns ~~~~~~~~~~~~~~~~~~~~~~~~~~~ ================= ======== ====== ================================================= Name Type Units Description ================= ======== ====== ================================================= RA float64 deg Right ascension DEC float64 deg Declination PMRA float32 mas/yr Proper motion in the RA direction PMDEC float32 mas/yr Proper motion in the Dec direction REF_EPOCH float32 yr Reference epoch for Gaia/Tycho astrometry PARALLAX float32 mas Parallax TARGETID int64 Unique DESI targeting ID SV3_DESI_TARGET int64 DESI (dark time program) target selection bitmask SV3_SCND_TARGET int64 Target selection bitmask for secondary programs SUBPRIORITY float64 Random subpriority [0-1] to break assignment ties OBSCONDITIONS int32 Observing conditions/program bitmask (bright/dark/backup/etc.) PRIORITY_INIT int64 Target's initial priority from target selection bitmasks and OBSCONDITIONS NUMOBS_INIT int64 Target's initial desired number of observations SV3_BGS_TARGET int64 BGS (bright time program) target selection bitmask SV3_MWS_TARGET int64 MWS (bright time program) target selection bitmask NUMOBS_MORE int64 Desired number of observations given target's current state NUMOBS int64 Number of (good) observations of target acquired so far Z float64 Redshift measured by Redrock ZWARN int64 Redshift warning bitmask measured by Redrock ZTILEID int32 ID of tile that most recently updated target's state TARGET_STATE char[15] Combination of target's class and its current observational state TIMESTAMP char[19] s UTC time at which the target's state was updated VERSION char[6] Version of desitarget code used to update target's state PRIORITY int64 Target's current priority ================= ======== ====== =================================================