--- header unit 0: primary ---
SIMPLE = T / conforms to FITS standard
BITPIX = 8 / array data type
NAXIS = 0 / number of array dimensions
EXTEND = T
CHECKSUM = 'C6gGC5Z9C5dGC5Z9' / HDU checksum updated 2026-03-05T18:03:13
DATASUM = '0' / data unit checksum updated 2026-03-05T18:03:13
--- header unit 1: binary table ---
XTENSION = 'BINTABLE' / binary table extension
BITPIX = 8 / array data type
NAXIS = 2 / number of array dimensions
NAXIS1 = 32 / width of table in bytes
NAXIS2 = 1040 / number of rows in table
PCOUNT = 8710898 / number of group parameters
GCOUNT = 1 / number of groups
TFIELDS = 4 / number of fields in each row
TTYPE1 = 'COMPRESSED_DATA' / label for field 1
TFORM1 = '1PB(14365)' / data format of field: variable length array
TTYPE2 = 'GZIP_COMPRESSED_DATA' / label for field 2
TFORM2 = '1PB(51)' / data format of field: variable length array
TTYPE3 = 'ZSCALE' / label for field 3
TFORM3 = '1D' / data format of field: 8-byte DOUBLE
TTYPE4 = 'ZZERO' / label for field 4
TFORM4 = '1D' / data format of field: 8-byte DOUBLE
ZIMAGE = T / extension contains compressed image
ZTENSION = 'IMAGE' / Image extension
ZBITPIX = -32 / array data type
ZNAXIS = 3 / number of array dimensions
ZNAXIS1 = 104
ZNAXIS2 = 104
ZNAXIS3 = 1036
ZPCOUNT = 0 / number of parameters
ZGCOUNT = 1 / number of groups
ZTILE1 = 32 / size of tiles to be compressed
ZTILE2 = 32 / size of tiles to be compressed
ZTILE3 = 16 / size of tiles to be compressed
ZCMPTYPE = 'RICE_1' / 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)
ZNAME3 = 'NOISEBIT' / floating point quantization level
ZVAL3 = 16.0 / floating point quantization level
ZQUANTIZ = 'NO_DITHER' / No dithering during quantization
WCSAXES = 3 / Number of coordinate axes
CRPIX1 = 52.5 / Pixel coordinate of reference point
CRPIX2 = 52.5 / Pixel coordinate of reference point
CRPIX3 = 1.0 / Pixel coordinate of reference point
PC1_1 = 0.54890215831815 / Coordinate transformation matrix element
PC1_2 = 0.8358866074975 / Coordinate transformation matrix element
PC2_1 = -0.8358866074975 / Coordinate transformation matrix element
PC2_2 = 0.54890215831815 / Coordinate transformation matrix element
CDELT1 = -0.00013888888888889 / [deg] Coordinate increment at reference point
CDELT2 = 0.00013888888888889 / [deg] Coordinate increment at reference point
CDELT3 = 2.0 / [m] Coordinate increment at reference point
CUNIT1 = 'deg' / Units of coordinate increment and value
CUNIT2 = 'deg' / Units of coordinate increment and value
CUNIT3 = 'Angstrom' / Units of coordinate increment and value
CTYPE1 = 'RA---TAN' / Right ascension, gnomonic projection
CTYPE2 = 'DEC--TAN' / Declination, gnomonic projection
CTYPE3 = 'WAVE' / Vacuum wavelength (linear)
CRVAL1 = 35.828216552734 / [deg] Coordinate value at reference point
CRVAL2 = 1.6625726222992 / [deg] Coordinate value at reference point
CRVAL3 = 3470.0 / [m] Coordinate value at reference point
LONPOLE = 180.0 / [deg] Native longitude of celestial pole
LATPOLE = 1.6625726222992 / [deg] Native latitude of celestial pole
MJDREF = 0.0 / [d] MJD of fiducial time
RADESYS = 'ICRS' / Equatorial coordinate system
FILETIME = '2025-08-21 15:05:23'
SURVEY = 'hdr5'
MASK = 'True'
CONVOLVE = 'False'
INTERP = 'linear'
FFSKY = 'False'
FFSKYRC = 'False'
SHOTID = 20201218015
FIELD = 'dex-fall'
OBJID = 'DEXfl1884'
DATE = 20201218
OBSID = 15
RA = 35.747382
DEC = 1.663936
PA = 211.741729
N_IFU = 69
FWHM = 2.7401402
FWHM_ERR = 0.357751
RESPONSE = 0.212
RELFLUX1 = 0.9852857
RELFLUX2 = 1.1280098
RELFLUX3 = 0.88302726
AMBTEMP = 6.4144444
DATEVOBS = '20201218v015'
DEWPOINT = -12.518389
EXPNUM1 = 1
EXPNUM2 = 2
EXPNUM3 = 3
EXPTIME1 = 608.19965
EXPTIME2 = 608.3227
EXPTIME3 = 608.09924
HUMIDITY = 21.258
MJD1 = 59201.19
MJD2 = 59201.2
MJD3 = 59201.207
OBSIND = 1
PRESSURE = 800.9147
STRUCTAZ = 215.93062
TIME = '0433472'
TRAJCDEC = 1.6637
TRAJCPA = 210.31512
TRAJCRA = 35.747623
BUNIT = '1e-17 erg s^-1 cm^-2'
SPECBW = 2.0
EXTNAME = 'DATA' / extension name
CHECKSUM = 'TAAYU80WTA7WT77W' / HDU checksum updated 2026-03-05T18:03:14
DATASUM = '1831043828' / data unit checksum updated 2026-03-05T18:03:14
ZHECKSUM = 'Z2EGd199Z1CEb199' / HDU checksum updated 2026-03-05T18:03:14
ZDATASUM = '1322267233' / data unit checksum updated 2026-03-05T18:03:14
HISTORY BUNIT updated: flux per pixel (removed arcsec^-2).
--- header unit 2: binary table ---
XTENSION = 'BINTABLE' / binary table extension
BITPIX = 8 / array data type
NAXIS = 2 / number of array dimensions
NAXIS1 = 32 / width of table in bytes
NAXIS2 = 1040 / number of rows in table
PCOUNT = 8935676 / number of group parameters
GCOUNT = 1 / number of groups
TFIELDS = 4 / number of fields in each row
TTYPE1 = 'COMPRESSED_DATA' / label for field 1
TFORM1 = '1PB(16447)' / data format of field: variable length array
TTYPE2 = 'GZIP_COMPRESSED_DATA' / label for field 2
TFORM2 = '1PB(51)' / data format of field: variable length array
TTYPE3 = 'ZSCALE' / label for field 3
TFORM3 = '1D' / data format of field: 8-byte DOUBLE
TTYPE4 = 'ZZERO' / label for field 4
TFORM4 = '1D' / data format of field: 8-byte DOUBLE
ZIMAGE = T / extension contains compressed image
ZTENSION = 'IMAGE' / Image extension
ZBITPIX = -32 / array data type
ZNAXIS = 3 / number of array dimensions
ZNAXIS1 = 104
ZNAXIS2 = 104
ZNAXIS3 = 1036
ZPCOUNT = 0 / number of parameters
ZGCOUNT = 1 / number of groups
ZTILE1 = 32 / size of tiles to be compressed
ZTILE2 = 32 / size of tiles to be compressed
ZTILE3 = 16 / size of tiles to be compressed
ZCMPTYPE = 'RICE_1' / 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)
ZNAME3 = 'NOISEBIT' / floating point quantization level
ZVAL3 = 16.0 / floating point quantization level
ZQUANTIZ = 'NO_DITHER' / No dithering during quantization
WCSAXES = 3 / Number of coordinate axes
CRPIX1 = 52.5 / Pixel coordinate of reference point
CRPIX2 = 52.5 / Pixel coordinate of reference point
CRPIX3 = 1.0 / Pixel coordinate of reference point
PC1_1 = 0.54890215831815 / Coordinate transformation matrix element
PC1_2 = 0.8358866074975 / Coordinate transformation matrix element
PC2_1 = -0.8358866074975 / Coordinate transformation matrix element
PC2_2 = 0.54890215831815 / Coordinate transformation matrix element
CDELT1 = -0.00013888888888889 / [deg] Coordinate increment at reference point
CDELT2 = 0.00013888888888889 / [deg] Coordinate increment at reference point
CDELT3 = 2.0 / [m] Coordinate increment at reference point
CUNIT1 = 'deg' / Units of coordinate increment and value
CUNIT2 = 'deg' / Units of coordinate increment and value
CUNIT3 = 'Angstrom' / Units of coordinate increment and value
CTYPE1 = 'RA---TAN' / Right ascension, gnomonic projection
CTYPE2 = 'DEC--TAN' / Declination, gnomonic projection
CTYPE3 = 'WAVE' / Vacuum wavelength (linear)
CRVAL1 = 35.828216552734 / [deg] Coordinate value at reference point
CRVAL2 = 1.6625726222992 / [deg] Coordinate value at reference point
CRVAL3 = 3470.0 / [m] Coordinate value at reference point
LONPOLE = 180.0 / [deg] Native longitude of celestial pole
LATPOLE = 1.6625726222992 / [deg] Native latitude of celestial pole
MJDREF = 0.0 / [d] MJD of fiducial time
RADESYS = 'ICRS' / Equatorial coordinate system
FILETIME = '2025-08-21 15:05:23'
SURVEY = 'hdr5'
MASK = 'True'
CONVOLVE = 'False'
INTERP = 'linear'
FFSKY = 'False'
FFSKYRC = 'False'
SHOTID = 20201218015
FIELD = 'dex-fall'
OBJID = 'DEXfl1884'
DATE = 20201218
OBSID = 15
RA = 35.747382
DEC = 1.663936
PA = 211.741729
N_IFU = 69
FWHM = 2.7401402
FWHM_ERR = 0.357751
RESPONSE = 0.212
RELFLUX1 = 0.9852857
RELFLUX2 = 1.1280098
RELFLUX3 = 0.88302726
AMBTEMP = 6.4144444
DATEVOBS = '20201218v015'
DEWPOINT = -12.518389
EXPNUM1 = 1
EXPNUM2 = 2
EXPNUM3 = 3
EXPTIME1 = 608.19965
EXPTIME2 = 608.3227
EXPTIME3 = 608.09924
HUMIDITY = 21.258
MJD1 = 59201.19
MJD2 = 59201.2
MJD3 = 59201.207
OBSIND = 1
PRESSURE = 800.9147
STRUCTAZ = 215.93062
TIME = '0433472'
TRAJCDEC = 1.6637
TRAJCPA = 210.31512
TRAJCRA = 35.747623
BUNIT = '1e-17 erg s^-1 cm^-2'
SPECBW = 2.0
EXTNAME = 'ERROR' / extension name
CHECKSUM = 'UkAGak19Uk8Gak89' / HDU checksum updated 2026-03-05T18:03:15
DATASUM = '2119412517' / data unit checksum updated 2026-03-05T18:03:15
ZHECKSUM = '5H7FA94C7E4CA94C' / HDU checksum updated 2026-03-05T18:03:15
ZDATASUM = '318834098' / data unit checksum updated 2026-03-05T18:03:15
HISTORY BUNIT updated: flux per pixel (removed arcsec^-2).
--- header unit 3: binary table ---
XTENSION = 'BINTABLE' / binary table extension
BITPIX = 8 / array data type
NAXIS = 2 / number of array dimensions
NAXIS1 = 8 / width of table in bytes
NAXIS2 = 1040 / number of rows in table
PCOUNT = 929096 / number of group parameters
GCOUNT = 1 / number of groups
TFIELDS = 1 / number of fields in each row
BSCALE = 1
BZERO = 32768
TTYPE1 = 'COMPRESSED_DATA' / label for field 1
TFORM1 = '1PB(9572)' / data format of field: variable length array
ZIMAGE = T / extension contains compressed image
ZTENSION = 'IMAGE' / Image extension
ZBITPIX = 16 / array data type
ZNAXIS = 3 / number of array dimensions
ZNAXIS1 = 104
ZNAXIS2 = 104
ZNAXIS3 = 1036
ZPCOUNT = 0 / number of parameters
ZGCOUNT = 1 / number of groups
ZTILE1 = 32 / size of tiles to be compressed
ZTILE2 = 32 / size of tiles to be compressed
ZTILE3 = 16 / size of tiles to be compressed
ZCMPTYPE = 'RICE_1' / compression algorithm
ZNAME1 = 'BLOCKSIZE' / compression block size
ZVAL1 = 32 / pixels per block
ZNAME2 = 'BYTEPIX' / bytes per pixel (1, 2, 4, or 8)
ZVAL2 = 2 / bytes per pixel (1, 2, 4, or 8)
WCSAXES = 3 / Number of coordinate axes
CRPIX1 = 52.5 / Pixel coordinate of reference point
CRPIX2 = 52.5 / Pixel coordinate of reference point
CRPIX3 = 1.0 / Pixel coordinate of reference point
PC1_1 = 0.54890215831815 / Coordinate transformation matrix element
PC1_2 = 0.8358866074975 / Coordinate transformation matrix element
PC2_1 = -0.8358866074975 / Coordinate transformation matrix element
PC2_2 = 0.54890215831815 / Coordinate transformation matrix element
CDELT1 = -0.00013888888888889 / [deg] Coordinate increment at reference point
CDELT2 = 0.00013888888888889 / [deg] Coordinate increment at reference point
CDELT3 = 2.0 / [m] Coordinate increment at reference point
CUNIT1 = 'deg' / Units of coordinate increment and value
CUNIT2 = 'deg' / Units of coordinate increment and value
CUNIT3 = 'Angstrom' / Units of coordinate increment and value
CTYPE1 = 'RA---TAN' / Right ascension, gnomonic projection
CTYPE2 = 'DEC--TAN' / Declination, gnomonic projection
CTYPE3 = 'WAVE' / Vacuum wavelength (linear)
CRVAL1 = 35.828216552734 / [deg] Coordinate value at reference point
CRVAL2 = 1.6625726222992 / [deg] Coordinate value at reference point
CRVAL3 = 3470.0 / [m] Coordinate value at reference point
LONPOLE = 180.0 / [deg] Native longitude of celestial pole
LATPOLE = 1.6625726222992 / [deg] Native latitude of celestial pole
MJDREF = 0.0 / [d] MJD of fiducial time
RADESYS = 'ICRS' / Equatorial coordinate system
FILETIME = '2025-08-21 15:05:23'
SURVEY = 'hdr5'
MASK = 'True'
CONVOLVE = 'False'
INTERP = 'linear'
FFSKY = 'False'
FFSKYRC = 'False'
SHOTID = 20201218015
FIELD = 'dex-fall'
OBJID = 'DEXfl1884'
DATE = 20201218
OBSID = 15
RA = 35.747382
DEC = 1.663936
PA = 211.741729
N_IFU = 69
FWHM = 2.7401402
FWHM_ERR = 0.357751
RESPONSE = 0.212
RELFLUX1 = 0.9852857
RELFLUX2 = 1.1280098
RELFLUX3 = 0.88302726
AMBTEMP = 6.4144444
DATEVOBS = '20201218v015'
DEWPOINT = -12.518389
EXPNUM1 = 1
EXPNUM2 = 2
EXPNUM3 = 3
EXPTIME1 = 608.19965
EXPTIME2 = 608.3227
EXPTIME3 = 608.09924
HUMIDITY = 21.258
MJD1 = 59201.19
MJD2 = 59201.2
MJD3 = 59201.207
OBSIND = 1
PRESSURE = 800.9147
STRUCTAZ = 215.93062
TIME = '0433472'
TRAJCDEC = 1.6637
TRAJCPA = 210.31512
TRAJCRA = 35.747623
SPECBW = 2.0
EXTNAME = 'MASK' / extension name
CHECKSUM = 'WGA3a951XGA1a951' / HDU checksum updated 2026-03-05T18:03:15
DATASUM = '3747442619' / data unit checksum updated 2026-03-05T18:03:15
ZHECKSUM = 'ZpNdamKZUmKdZmKZ' / HDU checksum updated 2026-03-05T18:03:15
ZDATASUM = '296448193' / data unit checksum updated 2026-03-05T18:03:15