================= coordinates-EXPID ================= :Summary: Coordinates data used and produced by fiber positioning, FVC and positioner calibration. :Naming Convention: ``coordinates-EXPID.fits``, where EXPID is the zero-padded 8-digit exposure ID. :Regex: ``coordinates-[0-9]{8}\.fits`` :File Type: FITS, 1 MB Contents ======== ====== ========== ======== ============================== Number EXTNAME Type Contents ====== ========== ======== ============================== HDU0_ COORDS IMAGE Empty HDU HDU1_ DATA BINTABLE Coordinates data HDU2_ STATIONARY BINTABLE Reference stationary positions ====== ========== ======== ============================== FITS Header Units ================= HDU0 ---- EXTNAME = COORDS This HDU contains header keywords with summary information for the exposure. Required Header Keywords ~~~~~~~~~~~~~~~~~~~~~~~~ .. collapse:: Required Header Keywords Table .. rst-class:: keywords ======== ========================================= ======= ======= KEY Example Value Type Comment ======== ========================================= ======= ======= TILEID 4403 int TILERA 170.239 float TILEDEC -7.093 float FIELDROT 0.0210480650645507 float FA_PLAN 2022-07-01T00:00:00.000 str FA_HA -6.72 float FA_RUN 2022-01-03T17:00:31+00:00 str FA_M_GFA 0.4 float FA_M_PET 0.4 float FA_M_POS 0.05 float REQRA 170.239 float REQDEC -7.093 float FIELDNUM 0 int FA_VER 5.4.0 str FA_SURV main str EXPID 103659 int FLAVOR science str SEQUENCE DESI str GUIDECAM GUIDE0,GUIDE2,GUIDE3,GUIDE5,GUIDE7,GUIDE8 str ACQCAM GUIDE0,GUIDE2,GUIDE3,GUIDE5,GUIDE7,GUIDE8 str GUIDTIME 5.0 float ACQTIME 15.0 float FOCUSCAM FOCUS1,FOCUS4,FOCUS6,FOCUS9 str FOCSTIME 60.0 float SKYCAM SKYCAM0,SKYCAM1 str SKYTIME 60.0 float SPCGRPHS SP0,SP1,SP2,SP3,SP4,SP5,SP6,SP7,SP8,SP9 str CCDSPECS SP0,SP1,SP2,SP3,SP4,SP5,SP6,SP7,SP8,SP9 str ILLSPECS SP0,SP1,SP2,SP3,SP4,SP5,SP6,SP7,SP8,SP9 str OBSTYPE SCIENCE str EXPTIME None Unknown ESTTIME 3705.79 float MAXTIME 5400.0 float MINTIME 300.0 float REQTIME 1860.0 float MIDTIME 915.0 float NIGHT 20211010 int SEQSTART 2022-01-14T11:03:08.447408 str POSRMS 0.0091 float TURBRMS None Unknown POSENABL 4268 int POSDISAB 711 int POSONTGT 4268 int POSONFRC 1. float POSCVFRC 0.1743 float POSCYCLE 1 int POSCNVGD 744 int CONVERGD F bool ======== ========================================= ======= ======= Empty HDU. HDU1 ---- EXTNAME = DATA Data used and produced by the fiber positioning loop. Required Header Keywords ~~~~~~~~~~~~~~~~~~~~~~~~ .. collapse:: Required Header Keywords Table .. rst-class:: keywords ====== ============= ==== ======================= KEY Example Value Type Comment ====== ============= ==== ======================= NAXIS1 240 int width of table in bytes NAXIS2 5133 int number of rows in table ====== ============= ==== ======================= Required Data Table Columns ~~~~~~~~~~~~~~~~~~~~~~~~~~~ .. rst-class:: columns ============ ======= ===== ====================================================================== Name Type Units Description ============ ======= ===== ====================================================================== PETAL_LOC int64 Petal index number DEVICE_LOC int64 Index of fiber on petal POS_Q float64 TODO: description needed POS_S float64 TODO: description needed POS_FLAGS float64 TODO: description needed POS_X float64 TODO: description needed POS_Y float64 TODO: description needed TARGET_RA float64 deg Barycentric right ascension in ICRS TARGET_DEC float64 deg Barycentric declination in ICRS FA_X float32 TODO: description needed FA_Y float32 TODO: description needed FA_FIBER float64 TODO: description needed FOR_DX_1 float64 TODO: description needed FOR_DY_1 float64 TODO: description needed FOR_X_1 float64 TODO: description needed FOR_Y_1 float64 TODO: description needed FLAGS_FOR_1 int64 TODO: description needed FOR_OFFSET_1 float64 TODO: description needed EXP_Q_1 float64 Expected focal plane Q position after correction move 1 EXP_S_1 float64 Expected focal plane S position after correction move 1 FLAGS_EXP_1 int64 Expected focal plane flags after correction move 1 EXP_X_1 float64 Expected focal plane X position after correction move 1 EXP_Y_1 float64 Expected focal plane Y position after correction move 1 FVC_X_1 float64 FVC position in pixels predicted by PlateMaker after correction move 1 FVC_Y_1 float64 FVC position in pixels predicted by PlateMaker after correction move 1 FLAGS_FVC_1 int64 FVC flags after correction move 1 CNT_X_1 float64 Matched position in FVC pixels after correction move 1 CNT_Y_1 float64 Matched position in FVC pixels after correction move 1 FLAGS_CNT_1 int64 FVC flags on matched position after correction move 1 CNT_MAG_1 float64 mag FVC estimated magnitude after correction move 1 CNT_ERR_1 float64 mag FVC estimated magnitude after correction move 1 ============ ======= ===== ====================================================================== HDU2 ---- EXTNAME = STATIONARY Refererence stationary fiber positions used when correcting for turbulence. Required Header Keywords ~~~~~~~~~~~~~~~~~~~~~~~~ .. collapse:: Required Header Keywords Table .. rst-class:: keywords ====== ============= ==== ======================= KEY Example Value Type Comment ====== ============= ==== ======================= NAXIS1 358 int width of table in bytes NAXIS2 796 int number of rows in table ====== ============= ==== ======================= Required Data Table Columns ~~~~~~~~~~~~~~~~~~~~~~~~~~~ .. rst-class:: columns =========== ========= ===== =================== Name Type Units Description =========== ========= ===== =================== PETAL_LOC int64 Petal index number DEVICE_LOC int64 Index of fiber on petal ZENITH_X float64 TODO: description needed ZENITH_Y float64 TODO: description needed MODEL_X char[163] TODO: description needed MODEL_Y char[163] TODO: description needed STATCOR_X_0 float64 TODO: description needed STATCOR_Y_0 float64 TODO: description needed STAT_X_0 float64 TODO: description needed STAT_Y_0 float64 TODO: description needed STATCOR_X_1 float64 TODO: description needed STATCOR_Y_1 float64 TODO: description needed STAT_X_1 float64 TODO: description needed STAT_Y_1 float64 TODO: description needed =========== ========= ===== =================== Notes and Examples ================== For the SURVEY=cmx m33 tile (TILEID=80615) tile and all the SURVEY=sv1 tiles (except TILEID=80971-80976, the dc3r2 ones), proper-motion correction was applied at the :doc:`fiberassign ` design step; thus the following columns can have different values than in the :doc:`desitarget products `: ``TARGET_RA``, ``TARGET_DEC``, ``REF_EPOCH``, ``PLATE_RA``, ``PLATE_DEC``, and ``PLATE_REF_EPOCH``.