General description: Object lists put out by the frames pipeline.
Naming convention: fpObjc-rrrrrr-c-ffff.fit, where rrrrrr is the imaging run number, c is the camera column (1-6) and ffff is the field number.
Approximate size: 7 * 2880 + (2152 * Nstars) {rounded up to nearest multiple of 2880) per file. For 400 detected object in a field, 881.28 Kb per file. For 1000 fields in a single pipeline run, a total of 881.28 Mb.
File type: FITS binary table
Read by products:
Written by products: frames
SIMPLE = T BITPIX = 8 NAXIS = 0 EXTEND = T VERSION = 'XXX ' / Version of software used. PS_ID = 'XXX ' / Postage stamp pipeline run identifier. BIAS_ID = 'XXX ' / Bias pipeline run identifier. ASTRO_ID= 'XXX ' / Astrometric pipeline run identifier. FRAME_ID= 'XXX ' / Frames pipeline run identifier. KO_VER = 'XXX ' / Version of known object catalog used. RUN = XXX / Imaging run number. FIELD = XXX / Field sequence number within the run. CAMCOL = XXX / Column in the imaging camera. SEED = XXX / Seed for photo random number generator REF_BAND= 2 / band used for canonical centre FILTERS = 'XXX XXX ...' / Filter order in arrays. DARK_VAR= '4 4 4 4 4' / Per-pixel variances at zero DN (DN^2) GAIN = '3.5 3.5 3.5 3.5 3.5' / Mean gains of amplifiers (e/DN) CREATIME= 'Sun Jun 9 18:48:51 EDT 1996' / The local time file was created END
There is one HDU of this type in the file. Most data in this file is compressed into 2-byte integers when it is stored in the OPDB. The compression assumes that the data values fit into specific ranges. Any data outside the range is truncated to the minimum/maximum value in the range. The precision with which the data is stored is also truncated. Magnitudes are first converted to uncalibrated luptitudes to facilitate compression. Likelihoods (star_L, exp_L, deV_L) are similarly compressed using an asinh (10000. * -asinh(x/(2.e-30))/(log(10)*log10(1.e-30))). The assumed data ranges for each field and the truncated precisions are:
Here's the table format.
XTENSION= 'BINTABLE' BITPIX = 8 NAXIS = 2 NAXIS1 = 2264 NAXIS2 = XXX PCOUNT = 0 GCOUNT = 1 TFIELDS = 98 THEAP = xxxxxxx TFORM1 = '1J ' TTYPE1 = 'id ' / Object ID, unique within its field (1 indexed). TFORM2 = '1J ' TTYPE2 = 'parent ' / parent TFORM3 = '1J ' TTYPE3 = 'nchild ' / Number of children objects. TFORM4 = '1J ' TTYPE4 = 'objc_type' / Classification. TFORM5 = '1E ' TTYPE5 = 'objc_prob_psf' / Probablity object is a star. TFORM6 = '1J ' TTYPE6 = 'catID ' / Catalog ID. TFORM7 = '1J ' TTYPE7 = 'objc_flags' / Object flags. TFORM8 = '1J ' TTYPE9 = 'objc_flags2' / More object flags. TFORM9 = '1E ' TTYPE9 = 'objc_rowc' / Nominal row position (r' coordinates). TUNIT9 = 'pixels ' TFORM10 = '1E ' TTYPE10 = 'objc_rowcErr' / Nominal row position (r' coordinates). (error) COMMENT / This is the centroiding error only. It does COMMENT / not include errors from the TRANS structures. TUNIT10 = 'pixels ' TFORM11 = '1E ' TTYPE11 = 'objc_colc' / Nominal column position (r' coordinates). TUNIT11 = 'pixels ' TFORM12 = '1E ' TTYPE12 = 'objc_colcErr' / Nominal column position (r' coordinates). (erro COMMENT / This is the centroiding error only. It does COMMENT / not include errors from the TRANS structures. TUNIT12 = 'pixels ' TFORM13 = '1E ' TTYPE13 = 'rowv' / Row-component of object's velocity. TUNIT13 = 'pixels/frame' TFORM14 = '1E ' TTYPE14 = 'rowvErr' / Row-component of object's velocity. (error) TUNIT14 = 'pixels/frame' TFORM15 = '1E ' TTYPE15 = 'colv' / Column-component of object's velocity. TUNIT15 = 'pixels/frame' TFORM16 = '1E ' TTYPE16 = 'colvErr' / Column-component of obejct's velocity. (error) TUNIT16 = 'pixels/frame' TFORM17 = '5E ' TTYPE17 = 'rowc ' / Row center. TUNIT17 = 'pixels ' TFORM18 = '5E ' TTYPE18 = 'rowcErr ' / Row center. (error) TUNIT18 = 'pixels ' TFORM19 = '5E ' TTYPE19 = 'colc ' / Center column. TUNIT19 = 'pixels ' TFORM20 = '5E ' TTYPE20 = 'colcErr ' / Center column. (error) TUNIT20 = 'pixels ' TFORM21 = '5E ' TTYPE21 = 'sky ' / Sky flux. TUNIT21 = 'DNs/pixel' TFORM22 = '5E ' TTYPE22 = 'skyErr ' / Sky flux. (error) TUNIT22 = 'DNs/pixel' TFORM23 = '5E ' TTYPE23 = 'psfCounts' / PSF flux. TUNIT23 = 'DNs ' TFORM24 = '5E ' TTYPE24 = 'psfCountsErr' / PSF flux. (error) TUNIT24 = 'DNs ' TFORM25 = '5E ' TTYPE25 = 'fiberCounts' / Flux in 3 arcsec diameter fiber radius. TUNIT25 = 'DNs ' TFORM26 = '5E ' TTYPE26 = 'fiberCountsErr' / Flux in 3 arcsec diameter fiber radius. (error) TUNIT26 = 'DNs ' TFORM27 = '5E ' TTYPE27 = 'petroCounts' / Petrosian flux. TUNIT27 = 'DNs ' TFORM28 = '5E ' TTYPE28 = 'petroCountsErr' / Petrosian flux. (error) TUNIT28 = 'DNs ' TFORM29 = '5E ' TTYPE29 = 'petroRad' / Petrosian radius. TUNIT29 = 'pixels ' TFORM30 = '5E ' TTYPE30 = 'petroRadErr' / Petrosian radius. (error) TUNIT30 = 'pixels ' TFORM31 = '5E ' TTYPE31 = 'petroR50' / Radius with 50 percent of Petrosian light. TUNIT31 = 'pixels ' TFORM32 = '5E ' TTYPE32 = 'petroR50Err' / Radius with 50 percent of Petrosian light. (err TUNIT32 = 'pixels ' TFORM33 = '5E ' TTYPE33 = 'petroR90' / Radius with 90 percent of Petrosian light. TUNIT33 = 'pixels ' TFORM34 = '5E ' TTYPE34 = 'petroR90Err' / Radius with 90 percent of Petrosian light. (err TUNIT34 = 'pixels ' TFORM35 = '5E ' TTYPE35 = 'Q ' / Stokes Q parameter. TFORM36 = '5E ' TTYPE36 = 'QErr ' / Stokes Q parameter. (error) TFORM37 = '5E ' TTYPE37 = 'U ' / Stokes U parameter. TFORM38 = '5E ' TTYPE38 = 'UErr ' / Stokes U parameter. (error) TFORM39 = '5E ' TTYPE39 = 'M_e1 ' / Adaptive E1 shape measure TFORM40 = '5E ' TTYPE40 = 'M_e2 ' / Adaptive E2 shape measure TFORM41 = '5E ' TTYPE41 = 'M_e1e1Err' / Covariance in E1/E1 shape measure TFORM42 = '5E ' TTYPE42 = 'M_e1e2Err' / Covariance in E1/E2 shape measure TFORM43 = '5E ' TTYPE43 = 'M_e2e2Err' / Covariance in E2/E2 shape measure TFORM44 = '5E ' TTYPE44 = 'M_rr_cc ' / Adaptive (<r^2> + <c^2>) TFORM45 = '5E ' TTYPE45 = 'M_rr_ccErr' / Error in adaptive (<r^2> + <c^2>) TFORM46 = '5E ' TTYPE46 = 'M_cr4 ' / Adaptive fourth moment TFORM47 = '5E ' TTYPE47 = 'M_e1_psf' / Adaptive E1 for PSF TFORM48 = '5E ' TTYPE48 = 'M_e2_psf' / Adaptive E2 for PSF TFORM49 = '5E ' TTYPE49 = 'M_rr_cc_psf' / Adaptive (<r^2> + <c^2>) for PSF TFORM50 = '5E ' TTYPE50 = 'M_cr4_psf' / Adaptive fourth moment for PSF TFORM51 = '5E ' TTYPE51 = 'iso_rowc' / Isophotal row centroid. TUNIT51 = 'pixels ' TFORM52 = '5E ' TTYPE52 = 'iso_rowcErr' / Isophotal row centroid. (error) TUNIT52 = 'pixels ' TFORM53 = '5E ' TTYPE53 = 'iso_rowcGrad' / Gradient in row centroid with isophote. TUNIT53 = 'pixels/(1 mag/arcsec^2 SB change) at object center' TFORM54 = '5E ' TTYPE54 = 'iso_colc' / Isophotal column centroid. TUNIT54 = 'pixels ' TFORM55 = '5E ' TTYPE55 = 'iso_colcErr' / Isophotal column centroid. (error) TUNIT55 = 'pixels ' TFORM56 = '5E ' TTYPE56 = 'iso_colcGrad' / Gradient in column centroid wwith isophote. TUNIT56 = 'pixels/(1 mag/arcsec^2 SB change) at object center' TFORM57 = '5E ' TTYPE57 = 'iso_a ' / Isophotal major axis. TUNIT57 = 'pixels ' TFORM58 = '5E ' TTYPE58 = 'iso_aErr' / Isophotal major axis. (error) TUNIT58 = 'pixels ' TFORM59 = '5E ' TTYPE59 = 'iso_aGrad' / Gradient is major axis with isophote. TUNIT59 = 'pixels/(1 mag/arcsec^2 SB change) at isophote' TFORM60 = '5E ' TTYPE60 = 'iso_b ' / Isophotal minor axis. TUNIT60 = 'pixels ' TFORM61 = '5E ' TTYPE61 = 'iso_bErr' / Isophotal minor axis. (error) TUNIT61 = 'pixels ' TFORM62 = '5E ' TTYPE62 = 'iso_bGrad' / Gradient in minor axis with isophote. TUNIT62 = 'pixels/(1 mag/arcsec^2 SB change) at isophote' TFORM63 = '5E ' TTYPE63 = 'iso_phi ' / Isophotal position angle. TUNIT63 = 'degrees (positive anticlockwise from scan direction)' TFORM64 = '5E ' TTYPE64 = 'iso_phiErr' / Isophotal position angle. (error) TUNIT64 = 'degrees ' TFORM65 = '5E ' TTYPE65 = 'iso_phiGrad' / Gradient in positional angle with isophote. TUNIT65 = 'degrees/(1 mag/arcsec^2 SB change) at isophote' TFORM66 = '5E ' TTYPE66 = 'r_deV ' / DeVaucouler fit scale radius. TUNIT66 = 'pixels ' TFORM67 = '5E ' TTYPE67 = 'r_deVErr' / DeVaucouler fit scale radius. (error) TUNIT67 = 'pixels ' TFORM68 = '5E ' TTYPE68 = 'ab_deV ' / DeVaucouler fit a/b. TFORM69 = '5E ' TTYPE69 = 'ab_deVErr' / DeVaucouler fit a/b. (error) TFORM70 = '5E ' TTYPE70 = 'phi_deV ' / DeVaucouler fit position angle. TUNIT70 = 'degrees (positive anticlockwise from scan direction + 90 deg)' TFORM71 = '5E ' TTYPE71 = 'phi_deVErr' / DeVaucouler fit position angle. (error) TUNIT71 = 'degrees ' TFORM72 = '5E ' TTYPE72 = 'counts_deV' / DeVaucouler fit counts. TUNIT72 = 'DNs ' TFORM73 = '5E ' TTYPE73 = 'counts_deVErr' / DeVaucouler fit counts. (error) TUNIT73 = 'DNs ' TFORM74 = '5E ' TTYPE74 = 'r_exp ' / Exponetial fit scale radius. TUNIT74 = 'pixels ' TFORM75 = '5E ' TTYPE75 = 'r_expErr' / Exponetial fit scale radius. (error) TUNIT75 = 'pixels ' TFORM76 = '5E ' TTYPE76 = 'ab_exp ' / Exponential fit a/b. TFORM77 = '5E ' TTYPE77 = 'ab_expErr' / Exponential fit a/b. (error) TFORM78 = '5E ' TTYPE78 = 'phi_exp ' / Exponential fit position angle. TUNIT78 = 'degrees (positive anticlockwise from scan direction + 90 deg)' TFORM79 = '5E ' TTYPE79 = 'phi_expErr' / Exponential fit position angle. (error) TUNIT79 = 'degrees ' TFORM80 = '5E ' TTYPE80 = 'counts_exp' / Exponential fit counts. TUNIT80 = 'DNs ' TFORM81 = '5E ' TTYPE81 = 'counts_expErr' / Exponential fit counts. (error) TUNIT81 = 'DNs ' TFORM82 = '5E ' TTYPE82 = 'counts_model' / Better of deV/exp mag fit. TUNIT82 = 'DNs ' TFORM83 = '5E ' TTYPE83= 'counts_modelErr' / Better of deV/exp mag fit. (error) TUNIT83 = 'DNs ' TFORM84 = '5E ' TTYPE84 = 'texture ' / Texture parameter. TFORM85 = '5E ' TTYPE85 = 'star_L ' / Star likelihood. TFORM86 = '5E ' TTYPE86 = 'star_lnL' / Star ln(likelihood). TFORM87 = '5E ' TTYPE87 = 'exp_L ' / Exponential disk fit likelihood. TFORM88 = '5E ' TTYPE88 = 'exp_lnL ' / Exponential disk fit ln(likelihood). TFORM89 = '5E ' TTYPE89 = 'deV_L ' / DeVaucouler fit likelihood. TFORM90 = '5E ' TTYPE90 = 'deV_lnL ' / DeVaucouler fit ln(likelihood). TFORM91 = '5E ' TTYPE91 = 'fracPSF ' / Fraction of light in PSF. TFORM92 = '5J ' TTYPE92 = 'flags ' / Object flags. TFORM93 = '5J ' TTYPE93 = 'flags2 ' / More object flags. TFORM94 = '5J ' TTYPE94 = 'type ' / Object type. TFORM95 = '5E ' TTYPE95 = 'prob_psf' / Probablity object is a star in each filter. TFORM96 = '5J ' TTYPE96 = 'nprof ' / Number of radial bins. TFORM97 = '75E ' TTYPE97 = 'profMean' / Mean pixel flux in annulus. TDIM97 = '(15,5) ' TUNIT97 = 'DNs/pixel' TFORM98 = '75E ' TTYPE98 = 'profErr ' / Standard deviation of profMean. TDIM98 = '(15,5) ' TUNIT98 = 'DNs/pixel' END
There is one HDU of this type, enumerating the legal values for the "objc_flags" field (a bit mask) in the object HDU. The legal values are:
OBJECT1_CANONICAL_CENTER = 0x1, /* used canonical, not local, centre */
OBJECT1_BRIGHT = 0x2, /* detected by Bright Objects */
OBJECT1_EDGE = 0x4, /* object is too close to edge of frame*/
OBJECT1_BLENDED = 0x8, /* object is/was blended */
OBJECT1_CHILD = 0x10, /* object is a child */
OBJECT1_PEAKCENTER = 0x20, /* given centre position of peak pixel */
OBJECT1_NODEBLEND = 0x40, /* no deblending attempted */
OBJECT1_NOPROFILE = 0x80, /* too small to estimate a profile */
OBJECT1_NOPETRO = 0x100, /* no Petrosian radius */
OBJECT1_MANYPETRO = 0x200, /* more than one Petrosian radius */
OBJECT1_NOPETRO_BIG = 0x400, /* no Petrosian radius as object is too big */
OBJECT1_DEBLEND_TOO_MANY_PEAKS = 0x800, /* too many peaks to deblend */
OBJECT1_CR = 0x1000, /* contains a CR pixel */
OBJECT1_MANYR50 = 0x2000, /* more than one 50% radius */
OBJECT1_MANYR90 = 0x4000, /* more than one 90% radius */
OBJECT1_BAD_RADIAL = 0x8000, /* some low S/N radial points */
OBJECT1_INCOMPLETE_PROFILE = 0x10000, /* r_P includes off-frame pixels */
OBJECT1_INTERP = 0x20000, /* object contains interpolated pixels */
OBJECT1_SATUR = 0x40000, /* object contains saturated pixels */
OBJECT1_NOTCHECKED = 0x80000, /* object contains NOTCHECKED pixels */
OBJECT1_SUBTRACTED = 0x100000, /* object had wings subtracted */
OBJECT1_NOSTOKES = 0x200000, /* object has no measured stokes params*/
OBJECT1_BADSKY = 0x400000, /* sky level so bad that object is -ve */
OBJECT1_PETROFAINT = 0x800000, /* >= 1 Petrosian radius too faint */
OBJECT1_TOO_LARGE = 0x1000000, /* object is too large */
OBJECT1_DEBLENDED_AS_PSF = 0x2000000, /* deblender treated obj as PSF */
OBJECT1_DEBLEND_PRUNED = 0x4000000, /* deblender pruned peak list */
OBJECT1_ELLIPFAINT = 0x8000000, /* Centre's fainter than desired elliptical isophote */
OBJECT1_BINNED1 = 0x10000000, /* object was found in 1x1 binned image*/
OBJECT1_BINNED2 = 0x20000000, /* object was found in 2x2 binned image*/
OBJECT1_BINNED4 = 0x40000000, /* object was found in 4x4 binned image*/
OBJECT1_MOVED = 0x80000000 /* Object appears to have moved during */
/* the exposure. May have been */
/* deblended as a moving object. */
XTENSION= 'BINTABLE' BITPIX = 8 NAXIS = 2 NAXIS1 = 66 NAXIS2 = 32 PCOUNT = 0 GCOUNT = 1 TFIELDS = 3 TYPENAME= 'OBJECT1_FLAGS' TFORM1 = '31A ' TTYPE1 = 'defName ' TFORM2 = '31A ' TTYPE2 = 'attributeName' TFORM3 = '1J ' TTYPE3 = 'Value ' END
There is one HDU of this type, enumerating the legal values for the "objc_flags" field (a bit mask) in the object HDU. The legal values are:
OBJECT2_DEBLENDED_AS_MOVING= 0x1, /* deblended as a moving object */
OBJECT2_NODEBLEND_MOVING = 0x2, /* no deblend of moving object */
OBJECT2_TOO_FEW_DETECTIONS = 0x4, /* too few detections to deblend */
OBJECT2_BAD_MOVING_FIT = 0x8, /* Fit to moving object was too poor */
OBJECT2_STATIONARY = 0x10, /* velocity is consistent with zero */
OBJECT2_PEAKS_TOO_CLOSE = 0x20, /* at least some peaks were too close, */
/* and thus merged */
OBJECT2_BINNED_CENTER = 0x40, /* image was binned while centroiding */
OBJECT2_LOCAL_EDGE = 0x80, /* per-band centre's too near edge */
OBJECT2_BAD_COUNTS_ERROR = 0x100, /* psf|fiberCountsErr is bad/unknown */
OBJECT2_BAD_MOVING_FIT_CHILD = 0x200, /* moving child's fit was too poor */
OBJECT2_DEBLEND_UNASSIGNED_FLUX = 0x400, /* deblender failed to assign */
/* enough of flux to children */
OBJECT2_SATUR_CENTER = 0x800, /* object's centre's saturated */
OBJECT2_INTERP_CENTER = 0x1000, /* object's centre is very close to at */
/* least one interpolated pixel */
OBJECT2_DEBLENDED_AT_EDGE=0x2000, /* object is deblended though EDGE */
OBJECT2_DEBLEND_NOPEAK =0x4000, /* object had no detected peak */
OBJECT2_PSF_FLUX_INTERP =0x8000, /* a signifcant amount of PSF's flux */
/* is interpolated */
OBJECT2_TOO_FEW_GOOD_DETECTIONS=0x10000, /* too few good detections to */
/* deblend as moving */
OBJECT2_CENTER_OFF_AIMAGE = 0x20000, /* at least one peak's centre lay */
/* off the atlas image in some band */
OBJECT2_MEASURED = 0x10000000, /* object has been measured */
OBJECT2_GROWN_MERGED= 0x20000000, /* growing led to a merger */
OBJECT2_HAS_CENTER = 0x40000000, /* OBJC has a canonical centre */
OBJECT2_MEASURE_BRIGHT = 0x80000000,/* object should be measured bright */
OBJECT2_DEBLEND_DEGENERATE= 0x40000,/* at least one potential child has */
/* been pruned as being too similar */
/* to some other template */
OBJECT2_BRIGHTEST_GALAXY_CHILD=0x80000, /* this is the brightest child */
/* galaxy in a blend */
OBJECT2_CANONICAL_BAND = 0x100000, /* This band was primary (usually r') */
OBJECT2_AMOMENT_FAINT = 0x200000, /* too faint for adaptive moments */
OBJECT2_AMOMENT_SHIFT = 0x400000, /* centre moved too far while */
/* determining adaptive moments */
OBJECT2_AMOMENT_MAXITER= 0x800000, /* Too many iterations while */
/* determining adaptive moments */
OBJECT2_MAYBE_CR = 0x1000000, /* object may be a cosmic ray */
OBJECT2_MAYBE_EGHOST = 0x2000000, /* object may be an electronics ghost */
OBJECT2_NOTCHECKED_CENTER =0x4000000 /* object's centre is NOTCHECKED */
XTENSION= 'BINTABLE' BITPIX = 8 NAXIS = 2 NAXIS1 = 66 NAXIS2 = 32 PCOUNT = 0 GCOUNT = 1 TFIELDS = 3 TYPENAME= 'OBJECT2_FLAGS' TFORM1 = '31A ' TTYPE1 = 'defName ' TFORM2 = '31A ' TTYPE2 = 'attributeName' TFORM3 = '1J ' TTYPE3 = 'Value ' END
There is one HDU of this type, enumerating the legal values for the "type" field in the object HDU. The legal values are:
OBJ_TYPE_UNK, /* Unknown */ OBJ_TYPE_CR, /* Cosmic ray */ OBJ_TYPE_DEFECT, /* Defect */ OBJ_TYPE_GALAXY, /* Galaxy */ OBJ_TYPE_GHOST, /* Ghost */ OBJ_TYPE_KNOWNOBJ, /* Known object */ OBJ_TYPE_STAR, /* Star */ OBJ_TYPE_TRAIL, /* Star trail */ OBJ_TYPE_SKY, /* Sky */ OBJ_TYPE_NTYPE /* ??? */
XTENSION= 'BINTABLE' BITPIX = 8 NAXIS = 2 NAXIS1 = 66 NAXIS2 = 11 PCOUNT = 0 GCOUNT = 1 TFIELDS = 3 TYPENAME= 'OBJ_TYPE' TFORM1 = '31A ' TTYPE1 = 'defName ' TFORM2 = '31A ' TTYPE2 = 'attributeName' TFORM3 = '1J ' TTYPE3 = 'Value ' END