--- header unit 0: primary ---
SIMPLE = T / file does conform to FITS standard
BITPIX = 16 / number of bits per data pixel
NAXIS = 0 / number of data axes
EXTEND = T / FITS dataset may contain extensions
COMMENT FITS (Flexible Image Transport System) format is defined in 'Astronomy
COMMENT and Astrophysics', volume 376, page 359; bibcode: 2001A&A...376..359H
CHECKSUM = '1fF63Z951fE51Z95' / HDU checksum updated 2018-10-01T17:09:17
DATASUM = '         0' / data unit checksum updated 2018-10-01T17:09:17
--- header unit 1: binary table ---
XTENSION = 'BINTABLE' / binary table extension
BITPIX = 8 / 8-bit bytes
NAXIS = 2 / 2-dimensional binary table
NAXIS1 = 32 / width of table in bytes
NAXIS2 = 4032 / number of rows in table
PCOUNT = 10007685 / size of special data area
GCOUNT = 1 / one data group (required keyword)
TFIELDS = 4 / number of fields in each row
TTYPE1 = 'COMPRESSED_DATA' / label for field 1
TFORM1 = '1PB(3809)' / data format of field: variable length array
TTYPE2 = 'ZSCALE' / label for field 2
TFORM2 = '1D' / data format of field: 8-byte DOUBLE
TTYPE3 = 'ZZERO' / label for field 3
TFORM3 = '1D' / data format of field: 8-byte DOUBLE
ZIMAGE = T / extension contains compressed image
ZTILE1 = 4096 / size of tiles to be compressed
ZTILE2 = 1 / size of tiles to be compressed
ZCMPTYPE = 'RICE_ONE' / compression algorithm
ZNAME1 = 'BLOCKSIZE' / compression block size
ZVAL1 = 32 / pixels per block
ZNAME2 = 'BYTEPIX' / bytes per pixel (1, 2, 4, or 8)
ZVAL2 = 4 / bytes per pixel (1, 2, 4, or 8)
EXTNAME = 'COMPRESSED_IMAGE'
ZSIMPLE = T / conforms to FITS standard
ZBITPIX = -32 / Bits per pixel
ZNAXIS = 2 / number of array dimensions
ZNAXIS1 = 4096
ZNAXIS2 = 4032
RADEC = 'Y' / Get RADEC from telescope or not
RA-OBS = '09:11:11.33' / right ascension (2000.)
DEC-OBS = '+54:59:59.8' / declination
CCD_NO = 4
DATE-OBS = '2017-04-21' / UTC shutter opened
TIME-OBS = '04:46:02.688' / UTC at start of exposure
TIMESYS = 'UTC' / Time system
EXPTIME = 98.175 / Exposure time (seconds)
HA = '+02:05:10' / hour angle
ST = '11:17:24' / local siderial time
EPOCH = 2015.0 / equinox of RA and DEC
FILTER = 'bokr' / Filter name
FOCUSVAL = '*0.913*0.834*0.854' / Focus
OBJECT = '31961'
IMAGETYP = 'object'
INSTRUME = '90prime' / Instrument name
RDNOISE = '10.5 10.0 7.72 8.56' / (e-) for hdu id: 13 14 15 16
GAINONE = '1.60 1.59 1.59 1.67' / (e-/DN) for hdu id: 13 14 15 16
GAIN = 98.175 / exptime as gain
FILENAME = 'TempImage2402.fits' / FLATFILE
OBSERVER = 'Zhimin Zhou, Junjie Jin, Fengwu Sun' / OPERATOR='None'
SITEELEV = '2120' / SITELAT = '31:58.8' SITELONG = '-111:36.0'
CAMTEMP = -134.393 / Camera temperature in C
DEWTEMP = -192.871 / Dewar temperature in C
READ_SPD = '138' / Readout speed (kpixel/sec/amp)
TEMPS1 = '' / Temps
WEATHER0 = '' / WIND_SPEED_MPH
COMMENT ==================================================================
COMMENT WCS
COMMENT ==================================================================
EQUINOX = 2000.0 / Equinox of WCS
WCSDIM = 2 / WCS Dimensionality
CTYPE1 = 'RA---TAN' / l_sun=122.02
CTYPE2 = 'DEC--TAN' / b_sun=36.75
CRVAL1 = 137.7969410331 / l_gal=162.0
CRVAL2 = 54.99817250145 / b_gal=41.75
CRPIX1 = -202.4812542386 / Azimuth=325.52
CRPIX2 = 4080.072141287 / Altitude=58.23
CD1_1 = -0.000125729064564 / Coordinate matrix
CD1_2 = 1.352249730934E-07 / Coordinate matrix
CD2_1 = 5.546566307598E-07 / Coordinate matrix
CD2_2 = 0.0001257758611053 / Coordinate matrix
AIRMASS = 1.176
MPHASE = 32.5 / Define the length of Moon_Month 29.53d
MAZIMUTH = 57.15 / Moon Azimuth is measured from south thr. west
MALITIUD = -60.72 / both units in degrees
MANGLE = 138.49 / Position angle of Moon to CCD_Field center
SKY = 16.932 / (e-/s per pixel)
SKYRMS = 0.471
SATURATE = 611.154 / 40000adu*gain/exptime
MJD_OBS = 57864.19864
ORIGIN = 3.0 / BASS Image Process Version
ARTIFACT = 'Y' / Artifact was done
HASSAT = F / Has satellite correction
NUM_COSM = 661 / Cosmicray Number
BASS-TLM = '2018-10-01T12:17:48' / Time of last modification
ZQUANTIZ = 'SUBTRACTIVE_DITHER_2' / Pixel Quantization Algorithm
HISTORY Image was compressed by CFITSIO using scaled integer quantization:
HISTORY q = 4.000000 / quantized level scaling parameter
HISTORY 'SUBTRACTIVE_DITHER_2' / Pixel Quantization Algorithm
ZDITHER0 = 5140 / dithering offset when quantizing floats
TTYPE4 = 'GZIP_COMPRESSED_DATA' / label for field
TFORM4 = '1PB(107)' / format of field
CHECKSUM = 'ApDIDm9IAmCIAm9I' / HDU checksum updated 2018-11-30T22:52:49
DATASUM = '4145555275' / data unit checksum updated 2018-11-30T22:52:49
ZHECKSUM = 'loeSmmdPlmdPlmdP' / HDU checksum updated 2018-11-30T14:52:48
ZDATASUM = '692843600' / data unit checksum updated 2018-10-09T21:28:09
RADESYS = 'ICRS' / Astrometric system
CUNIT1 = 'deg' / Axis unit
CUNIT2 = 'deg' / Axis unit
PV1_0 = 0.0009074377629232 / Projection distortion parameter
PV1_1 = 1.004536244323 / Projection distortion parameter
PV1_2 = 0.001712644050198 / Projection distortion parameter
PV1_4 = -0.0003726119305294 / Projection distortion parameter
PV1_5 = 1.953372576437E-05 / Projection distortion parameter
PV1_6 = 4.448819473414E-06 / Projection distortion parameter
PV1_7 = -0.01333902867957 / Projection distortion parameter
PV1_8 = 0.0001073102000972 / Projection distortion parameter
PV1_9 = -0.01290672367714 / Projection distortion parameter
PV1_10 = 2.933680495284E-05 / Projection distortion parameter
PV1_12 = 0.0003797997074089 / Projection distortion parameter
PV1_13 = 0.0002840054563504 / Projection distortion parameter
PV1_14 = 0.0005254366197976 / Projection distortion parameter
PV1_15 = 0.0007502555709226 / Projection distortion parameter
PV1_16 = -0.0002079712337852 / Projection distortion parameter
PV2_0 = 0.0007657286237325 / Projection distortion parameter
PV2_1 = 1.004181777773 / Projection distortion parameter
PV2_2 = 0.001713422905744 / Projection distortion parameter
PV2_4 = 0.0009225942591861 / Projection distortion parameter
PV2_5 = -0.0002811115226605 / Projection distortion parameter
PV2_6 = 0.0007252163241697 / Projection distortion parameter
PV2_7 = -0.009712667345239 / Projection distortion parameter
PV2_8 = 0.00104298210269 / Projection distortion parameter
PV2_9 = -0.01368980764697 / Projection distortion parameter
PV2_10 = 0.0022899508015 / Projection distortion parameter
PV2_12 = 0.003639631948419 / Projection distortion parameter
PV2_13 = 0.002651221770798 / Projection distortion parameter
PV2_14 = -0.0006519188644244 / Projection distortion parameter
PV2_15 = 0.0006055050650605 / Projection distortion parameter
PV2_16 = 0.002022712623575 / Projection distortion parameter
FGROUPNO = 1 / SCAMP field group label
ASTIRMS1 = 0.0 / Astrom. dispersion RMS (intern., high S/N)
ASTIRMS2 = 0.0 / Astrom. dispersion RMS (intern., high S/N)
ASTRRMS1 = 0.0 / Astrom. dispersion RMS (ref., high S/N)
ASTRRMS2 = 0.0 / Astrom. dispersion RMS (ref., high S/N)
ASTINST = 1 / SCAMP astrometric instrument label
FLXSCALE = 0.01018589253883 / SCAMP relative flux scale
MAGZEROP = 0.0 / SCAMP zero-point
PHOTIRMS = 0.0 / mag dispersion RMS (internal, high S/N)
PHOTINST = 1 / SCAMP photometric instrument label
PHOTLINK = F / True if linked to a photometric field
CALI_REF = 'PS1' / the reference database for calibration
CCDZPT = 25.8534 / zero point for CCD
CCDZPTA = 25.8593 / zero point for CCD ampA [1:2016,1:2048]
CCDZPTB = 25.8628 / zero point for CCD ampB [2017:4032,1:2048]
CCDZPTC = 25.8486 / zero point for CCD ampC [1:2016, 2049,4096]
CCDZPTD = 25.8437 / zero point for CCD ampD [2017:4032,2049:4096]
CCDPHOFF = 25.8534 / photometric offset of the matched stars
CCDPHRMS = 0.0244 / zpt rms of the matched objects in CCD
PHRMSA = 0.027 / zpt rms of the matched objects in CCD ampA
PHRMSB = 0.0219 / zpt rms of the matched objects in CCD ampB
PHRMSC = 0.0228 / zpt rms of the matched objects in CCD ampC
PHRMSD = 0.0244 / zpt rms of the matched objects in CCD ampD
APER_R = 13.0 / (pixels) photo-aperture radius
FWHM = 2.9504 / FWHM in pixel
SEEING = 1.3395 / seeing in arcsec
RAOFF = 0.0022 / median positional offset from PS1, in arcsec
DECOFF = -0.0856 / median positional offset from PS1, in arcsec
TRANS = 0.888 / median transparency.
CCDNSTAR = 10063.0 / total number of stars detected on a CCD
NMATCH = 339.0 / total number of matched stars in 2 arcsec
NMATCHA = 75.0 / number of matched stars in CCD ampA
NMATCHB = 84.0 / number of matched stars in CCD ampB
NMATCHC = 97.0 / number of matched stars in CCD ampC
NMATCHD = 83.0 / number of matched stars in CCD ampD
MDNCOL = 1.4992 / median (g-i) color of matched stars in CCD
COLT_PAR = '-0.009667,0.028089,-0.076505,0.002433' / par.in [gi^3,gi^2,gi^1,gi^0]
EBV = 0.0197 / E(B-V) from SFD1998
MLIM = 23.12 / magnitude limiting of 5-sigma galaxy detection
CALI_V = '3.0.1' / version of calibration code
HISTORY Astrometric solution by SCAMP version 2.0.4 (2016-11-04)
COMMENT (c) 2010-2013 IAP/CNRS/UPMC