Name: idGang-rrrrrr-c#-ffff.fit for photometric columns, and idGang-rrrrrr-r#-ffff.fit for astrometric rows, where rrrrrr is the imaging run number, # is the photometric column or astrometric row in the Imaging Array, and ffff is the frame number.
Produced by: iop
Used by: iop (quality analysis), ssc
Size: 480.96 Kb for photometric gang files and 1,128.96 Kb for astrometric gang files. Total for all chips for a 1000 frame/chip run is 7,401.6 Mb.
Archived? Yes. Tracked file.
SIMPLE = F BITPIX = 8 NAXIS = 0 EXTEND = T SDSS / special flag for decoding simple=f data UNSIGNED / U format used - unsigned 16 bit data in table BZERO = 3.27680000000000E+04 BSCALE = 1.00000000000000E+00 TAI = XXXXXXXXXX.XX / Number of seconds since Nov 17 1858 0 UT/TAI. RA = XXX.XXXXXX / Right ascension/longitude. (degrees) DEC = XXX.XXXXXX / Declination/latitude. (degrees) SPA = XXX.XXX / Camera col position angle wrt north. (degrees) IPA = XXX.XXX / Instrument rotator position angle. (degrees) IPARATE = XXX.XXXX / Instrument rotator angular velocity. (deg/sec) AZ = XXX.XXXXXX / Azimuth (encoder) of telescope. (degrees) ALT = XXX.XXXXXX / Altitude (encoder) of telescope. (degrees) FOCUS = XXX.X / Focus position (encoder). (microns) DATE-OBS= 'DD/MM/YY' / TAI date (DD/MM/YY) TAIHMS = 'HH:MM:SS.SS' / TAI time (HH:MM:SS.SS) (TAI-UT = approx 30 s) DAVERS = 'XXX ' / Version of DA software BADLINES= 0 / Number of bad lines in frame FRAME = XXX / Frame number. RUN = XXX / Imaging run number. BUNITS = 'ADUs ' ORIGIN = 'SDSS ' TELESCOP= '2.5m ' CCDMODE = 'XXX ' / 'STARING' or 'DRIFT' EQUINOX = XXXX.XX / Equinox of the TCC coordinates. SYSTEM = 'XXX ' / System of the TCC coordinates (mean, apparent). CAMCOL = XXX / Column in the imaging camera. (astro chips only) CCDSECL = '[1:2128,1:1361]' OVERSECL= '[1:20,1:1361]' BIASSECL= '[21:40,1:1361]' DATASECL= '[41:2088,1:1361]' CCDSECR = '[0:0,0:0]' DATASECR= '[0:0,0:0]' BIASSECR= '[0:0,0:0]' OVERSECR= '[1:20,1:1361]' C_OBS = XXX.X / CCD row clock rate. (usec/row) COLBIN = XXX / Binning factor perpendicular to the columns. ROWBIN = XXX / Binning factor perpendicular to the rows. NLINES = 1361 / Number of lines in a frame AMPL = 1 AMPR = 1 OBSERVER= 'XXX ' FLAVOR = 'XXX ' / Flavor of this run (science, calibration, test, SYS_SCN = 'XXX ' / Coordinate system of the scan great circle. EQNX_SCN= XXXX.XX / Equinox of the scan great circle. (years) NODE = XXX.XXXXX / Ra of the great circle's ascending node. (deg) INCL = XXX.XXXXX / Great circle's inclination wrt cel eq. (deg) XBORE = XXX.X / Boresight x offset from the array center. (mm) YBORE = XXX.X / Boresight y offset from the array center. (mm) STRIP = 'XXX ' / Strip in the stripe being tracked (N or S). STRIPE = XXX / Survey stripe identifier. FIELD = XXX / Field sequence number within the run OBJECT = 'XXX ' / e.g., 'stripe 50.6 degrees, north strip' EXPTIME = XXX.XX / Exposure time (seconds) END
XTENSION= 'BINTABLE' BITPIX = 8 NAXIS = 2 NAXIS1 = 12 NAXIS2 = XXX PCOUNT = 0 GCOUNT = 1 TFIELDS = 3 EXTNAME = 'QUART LOC' CAMROW = XXX / Row in imaging camera TSHIFT = XXX / Quartile scaling factor HISTBINS= XXX / Num bins in quartile hists DBASE = XXX / Maximum delta for hist bases NQCALCL = XXX / Number of quartiles calculated - lo col numbers NQCALCR = XXX / Number of quartiles calculated - hi col numbers FRBIASL = XXX / Left Frame bias x TSHIFT FRBIASR = XXX / Right Frame bias x TSHIFT FRSKYL = XXX / Left Mean Sky Value x TSHIFT FRSKYR = XXX / Right Mean Sky Value x TSHIFT FROSCNL = XXX / Left Mean Oscn Value x TSHIFT FROSCNR = XXX / Right Mean Oscn Value x TSHIFT SKIPPED = XXX / Number of rows ignored QTNCUT = XXX / SigCut = qtNcut * 0.00527 * sigma AUTHOR = 'Node=sdssid1.fnal.gov Type=photo Cr=1 Bd=0 #=5 Src=CAMERA' TFORM1 = '1J ' TTYPE1 = 'q1 ' / 25th percentile. TUNIT1 = 'ADUs x TSHIFT' TFORM2 = '1J ' TTYPE2 = 'q2 ' / 50th percentile. TUNIT2 = 'ADUs x TSHIFT' TFORM3 = '1J ' TTYPE3 = 'q3 ' / 75th percentile. TUNIT3 = 'ADUs x TSHIFT' END
XTENSION= 'BINTABLE' BITPIX = 8 NAXIS = 2 NAXIS1 = 1686 NAXIS2 = XXX PCOUNT = 0 GCOUNT = 1 TFIELDS = 3 EXTNAME = 'STAMP LOC' CAMROW = XXX / Row in imaging camera (PHOTO CHIPS ONLY) PSSIZE = 29 / Postage Stamp Size BSCOUNT = XXX / Number of Bright Stars PIX4STAR= XXX / Number of pixels in 3x3 needed for star STAR5X5 = XXX / True means use 5x5 for star finding STARDIST= XXX / Minimum distance between adjacent stars SDISTRIB= XXX / True means distribute stamps over frame STHRESHL= XXX / Star threshold - lo column numbers STHRESHR= XXX / Star threshold - hi column numbers SABSKYL = XXX / Value to add to sky level = threshold - lo colu SABSKYR = XXX / Value to add to sky level = threshold - hi colu SSATL = XXX / Star saturation - lo column numbers SSATR = XXX / Star saturation - hi column numbers SLOCOLL = XXX / Number of lo cols to skip for lo column numbers SLOCOLR = XXX / Number of lo cols to skip for hi column numbers SHICOLL = XXX / Number of hi cols to skip for lo column numbers SHICOLR = XXX / Number of hi cols to skip for hi column numbers TSHIFT = XXX / Bias scaling factor FRBIASL = XXX / Left Frame bias x TSHIFT FRBIASR = XXX / Right Frame bias x TSHIFT FRSKYL = XXX / Left Mean Sky Value x TSHIFT FRSKYR = XXX / Right Mean Sky Value x TSHIFT FROSCNL = XXX / Left Mean Oscn Value x TSHIFT FROSCNR = XXX / Right Mean Oscn Value x TSHIFT SKIPPED = XXX / Number of rows ignored TIMEROW = XXX / 10*Average time per row (usec) TIMEFRAM= XXX / 10*Time to analyze PREVIOUS frame (usec), scale AUTHOR = 'Node=sdssid1.fnal.gov Type=photo Cr=1 Bd=0 #=5 Src=CAMERA' TFORM1 = '841U ' / PostStamp ushorts TTYPE1 = 'pixelMap' / Postage Stamp subimage TUNIT1 = 'ADUs ' TFORM2 = '1I ' TTYPE2 = 'midRow ' / Frame row (data section) of middle pixel TFORM3 = '1I ' TTYPE3 = 'midCol ' / Frame column (data section) of middle pixel END
The table fields given below are for photometric and astrometric chips. Data from the focus chips are stored in the same fields, but with different meanings. For the focus chips, the fields have the following meanings:
XTENSION= 'BINTABLE' BITPIX = 8 NAXIS = 2 NAXIS1 = 48 NAXIS2 = XXX PCOUNT = 0 GCOUNT = 1 TFIELDS = 12 EXTNAME = 'STAR LOC' CAMROW = XXX / Row in imaging camera (PHOTO CHIPS ONLY) BSCOUNT = XXX / Number of Bright Stars FOCFLAG = XXX / Focus code run flag SIGFILT = X.XXXXXX / Sigma used for gunn filter VARFILTL= X.XXXXXX / Variance (left) used for gunn filter VARFILTR= X.XXXXXX / Variance (right) used for gunn filter GAINFILL= X.XXXXXX / Amp Gain (left) used for gunn filter GAINFILR= X.XXXXXX / Amp Gain (right) used for gunn filter NMEDIAN = XXX / Number used in stokes medians RMEDIAN = XXX / Median of rmajor for Stars QMEDIAN = XXX / Median of Q for Stars UMEDIAN = XXX / Median of U for Stars AUTHOR = 'Node=sdssid1.fnal.gov Type=photo Cr=1 Bd=0 #=5 Src=CAMERA' TFORM1 = '1J ' TTYPE1 = 'midRow ' / Frame row of the stamp's middle pixel. TFORM2 = '1J ' TTYPE2 = 'midCol ' / Frame column of the stamp's middle pixel. TFORM3 = '1E ' TTYPE3 = 'rowCentroid' / Row position of star center. TUNIT3 = 'pixels ' TFORM4 = '1E ' TTYPE4 = 'rowCentroidErr' / Row position of star center. (error) TUNIT4 = 'pixels ' TFORM5 = '1E ' TTYPE5 = 'colCentroid' / Column position of star center. TUNIT5 = 'pixels ' TFORM6 = '1E ' TTYPE6 = 'colCentroidErr' / Column position of star center. (error) TUNIT6 = 'pixels ' TFORM7 = '1E ' TTYPE7 = 'rMajor ' / Major axis radius. TUNIT7 = 'pixels ' TFORM8 = '1E ' TTYPE8 = 'rMinor ' / Minor axis radius. TUNIT8 = 'pixels ' TFORM9 = '1E ' TTYPE9 = 'angMajorAxis' / Major axis position angle. TUNIT9 = 'degrees ' TFORM10 = '1E ' TTYPE10 = 'peak ' / Peak of the gaussian fit. TUNIT10 = 'DNs ' TFORM11 = '1E ' TTYPE11 = 'counts ' / Sum of counts over sky. TUNIT11 = 'DNs ' TFORM12 = '1J ' TTYPE12 = 'statusFit' / 0=ok, else error. END