--- 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 = '1cE32Z931aE31Y93' / HDU checksum updated 2018-09-29T03:34:16
DATASUM = '         0' / data unit checksum updated 2018-09-29T03:34:16
--- 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 = 10025458 / 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(3613)' / 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 = '16:46:02.88' / right ascension (2000.)
DEC-OBS = '+70:44:59.3' / declination
CCD_NO = 3
DATE-OBS = '2018-07-04' / UTC shutter opened
TIME-OBS = '05:27:01.633' / UTC at start of exposure
TIMESYS = 'UTC' / Time system
EXPTIME = 250.0 / Exposure time (seconds)
HA = '+00:03:41' / hour angle
ST = '16:49:18' / local siderial time
EPOCH = 2015.0 / equinox of RA and DEC
FILTER = 'bokr' / Filter name
FOCUSVAL = '*0.908*0.820*0.937' / Focus
OBJECT = '46943'
IMAGETYP = 'object'
INSTRUME = '90prime' / Instrument name
RDNOISE = '11.4 9.38 10.6 9.89' / (e-) for hdu id: 9 10 11 12
GAINONE = '1.52 1.63 1.55 1.69' / (e-/DN) for hdu id: 9 10 11 12
GAIN = 250.0 / exptime as gain
FILENAME = 'TempImage2402.fits' / FLATFILE
OBSERVER = 'Jiali WANG, Xu ZHOU' / OPERATOR='None'
SITEELEV = '2120' / SITELAT = '31:58.8' SITELONG = '-111:36.0'
CAMTEMP = -131.671 / Camera temperature in C
DEWTEMP = -191.987 / 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=139.7
CTYPE2 = 'DEC--TAN' / b_sun=82.12
CRVAL1 = 251.5116108511 / l_gal=102.65
CRVAL2 = 70.74617762059999 / b_gal=35.67
CRPIX1 = -190.5564857081 / Azimuth=359.55
CRPIX2 = -139.9795460088 / Altitude=51.27
CD1_1 = -0.0001257541052306 / Coordinate matrix
CD1_2 = 1.693361024543E-06 / Coordinate matrix
CD2_1 = 1.256617852627E-06 / Coordinate matrix
CD2_2 = 0.0001257498743204 / Coordinate matrix
AIRMASS = 1.281
MPHASE = 70.59999999999999 / Define the length of Moon_Month 29.53d
MAZIMUTH = 92.59 / Moon Azimuth is measured from south thr. west
MALITIUD = -11.9 / both units in degrees
MANGLE = 101.15 / Position angle of Moon to CCD_Field center
SKY = 13.375 / (e-/s per pixel)
SKYRMS = 0.254
SATURATE = 240.0 / 40000adu*gain/exptime
MJD_OBS = 58303.2271
ORIGIN = 3.0 / BASS Image Process Version
ARTIFACT = 'Y' / Artifact was done
HASSAT = F / Has satellite correction
NUM_COSM = 545 / Cosmicray Number
BASS-TLM = '2018-09-29T02:53:04' / 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 = 6818 / dithering offset when quantizing floats
TTYPE4 = 'GZIP_COMPRESSED_DATA' / label for field
TFORM4 = '1PB(114)' / format of field
CHECKSUM = 'G3Z2H3Z2G3Z2G3Z2' / HDU checksum updated 2018-12-01T16:39:10
DATASUM = '660900279' / data unit checksum updated 2018-12-01T16:39:10
ZHECKSUM = '4eLH5bL94bLE4bL9' / HDU checksum updated 2018-12-01T08:39:09
ZDATASUM = '1359475672' / data unit checksum updated 2018-10-10T13:24:16
RADESYS = 'ICRS' / Astrometric system
CUNIT1 = 'deg' / Axis unit
CUNIT2 = 'deg' / Axis unit
PV1_0 = 0.0009308898099167 / Projection distortion parameter
PV1_1 = 1.004339241964 / Projection distortion parameter
PV1_2 = -0.001582451306571 / Projection distortion parameter
PV1_4 = -0.0007575877851924 / Projection distortion parameter
PV1_5 = 0.0004676672843707 / Projection distortion parameter
PV1_6 = -0.001946537559009 / Projection distortion parameter
PV1_7 = -0.01320092554981 / Projection distortion parameter
PV1_8 = 0.00304902168481 / Projection distortion parameter
PV1_9 = -0.01056787138627 / Projection distortion parameter
PV1_10 = 0.005832723794597 / Projection distortion parameter
PV1_12 = 0.001286087812846 / Projection distortion parameter
PV1_13 = 0.001971502761985 / Projection distortion parameter
PV1_14 = 0.0007368584737689 / Projection distortion parameter
PV1_15 = -0.002859401961779 / Projection distortion parameter
PV1_16 = -0.005571033672563 / Projection distortion parameter
PV2_0 = -0.0009631370130842 / Projection distortion parameter
PV2_1 = 1.004696739008 / Projection distortion parameter
PV2_2 = -0.001577502585047 / Projection distortion parameter
PV2_4 = 0.0003445353288674 / Projection distortion parameter
PV2_5 = -0.0005550452610179 / Projection distortion parameter
PV2_6 = 0.001961457334816 / Projection distortion parameter
PV2_7 = -0.01556636609261 / Projection distortion parameter
PV2_8 = 0.002363733762487 / Projection distortion parameter
PV2_9 = -0.01110598288342 / Projection distortion parameter
PV2_10 = 0.006497803849451 / Projection distortion parameter
PV2_12 = 0.002766568385799 / Projection distortion parameter
PV2_13 = 0.001013394684029 / Projection distortion parameter
PV2_14 = 0.003958155751449 / Projection distortion parameter
PV2_15 = 0.005298569615524 / Projection distortion parameter
PV2_16 = 0.005562290343603 / 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 = 0.004 / 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 = 21.3879 / zero point for CCD
CCDZPTA = 21.3254 / zero point for CCD ampA [1:2016,1:2048]
CCDZPTB = 21.4223 / zero point for CCD ampB [2017:4032,1:2048]
CCDZPTC = 21.3791 / zero point for CCD ampC [1:2016, 2049,4096]
CCDZPTD = 21.4599 / zero point for CCD ampD [2017:4032,2049:4096]
CCDPHOFF = 21.3879 / photometric offset of the matched stars
CCDPHRMS = 0.1465 / zpt rms of the matched objects in CCD
PHRMSA = 0.3567 / zpt rms of the matched objects in CCD ampA
PHRMSB = 0.1415 / zpt rms of the matched objects in CCD ampB
PHRMSC = 0.3328 / zpt rms of the matched objects in CCD ampC
PHRMSD = 0.1408 / zpt rms of the matched objects in CCD ampD
APER_R = 13.0 / (pixels) photo-aperture radius
FWHM = 4.8914 / FWHM in pixel
SEEING = 2.2207 / seeing in arcsec
RAOFF = -0.008 / median positional offset from PS1, in arcsec
DECOFF = -0.0366 / median positional offset from PS1, in arcsec
TRANS = 0.0147 / median transparency.
CCDNSTAR = 7416.0 / total number of stars detected on a CCD
NMATCH = 73.0 / total number of matched stars in 2 arcsec
NMATCHA = 7.0 / number of matched stars in CCD ampA
NMATCHB = 25.0 / number of matched stars in CCD ampB
NMATCHC = 16.0 / number of matched stars in CCD ampC
NMATCHD = 25.0 / number of matched stars in CCD ampD
MDNCOL = 1.3069 / 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 = 0.0369 / E(B-V) from SFD1998
MLIM = 18.85 / 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