--- header unit 0: primary ---
SIMPLE = T / conforms to FITS standard
BITPIX = 8 / array data type
NAXIS = 0 / number of array dimensions
EXTEND = T
CHECKSUM = 'B6dGC5Z9B5dGB5Z9' / HDU checksum updated 2026-03-05T19:15:21
DATASUM = '0' / data unit checksum updated 2026-03-05T19:15:21
--- 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 = 8840059 / 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(14977)' / data format of field: variable length array
TTYPE2 = 'GZIP_COMPRESSED_DATA' / label for field 2
TFORM2 = '1PB(47)' / 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 = -0.9627664821312 / Coordinate transformation matrix element
PC1_2 = -0.27033442415779 / Coordinate transformation matrix element
PC2_1 = 0.27033442415779 / Coordinate transformation matrix element
PC2_2 = -0.9627664821312 / 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 = 175.80587768555 / [deg] Coordinate value at reference point
CRVAL2 = 49.874713897705 / [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 = 49.874713897705 / [deg] Native latitude of celestial pole
MJDREF = 0.0 / [d] MJD of fiducial time
RADESYS = 'ICRS' / Equatorial coordinate system
FILETIME = '2025-08-21 21:16:34'
SURVEY = 'hdr5'
MASK = 'True'
CONVOLVE = 'False'
INTERP = 'linear'
FFSKY = 'False'
FFSKYRC = 'False'
SHOTID = 20220327011
FIELD = 'dex-spring'
OBJID = 'DEXsp1756'
DATE = 20220327
OBSID = 11
RA = 175.740529
DEC = 49.963339
PA = 72.765832
N_IFU = 76
FWHM = 1.6117812
FWHM_ERR = 0.15842858
RESPONSE = 0.1463
RELFLUX1 = 0.8951519
RELFLUX2 = 1.0421143
RELFLUX3 = 0.95623606
AMBTEMP = 19.233889
DATEVOBS = '20220327v011'
DEWPOINT = -16.733667
EXPNUM1 = 1
EXPNUM2 = 2
EXPNUM3 = 3
EXPTIME1 = 367.84973
EXPTIME2 = 368.4996
EXPTIME3 = 368.24966
HUMIDITY = 5.1024
MJD1 = 59665.15
MJD2 = 59665.152
MJD3 = 59665.156
OBSIND = 1
PRESSURE = 803.3867
STRUCTAZ = 45.056915
TIME = '0332159'
TRAJCDEC = 49.963707
TRAJCPA = 71.332924
TRAJCRA = 175.7402
BUNIT = '1e-17 erg s^-1 cm^-2'
SPECBW = 2.0
EXTNAME = 'DATA' / extension name
CHECKSUM = '38PfA5Pf35PfA5Pf' / HDU checksum updated 2026-03-05T19:15:22
DATASUM = '1747088612' / data unit checksum updated 2026-03-05T19:15:22
ZHECKSUM = 'bRFXbOCVbOCVbOCV' / HDU checksum updated 2026-03-05T19:15:22
ZDATASUM = '809722595' / data unit checksum updated 2026-03-05T19:15:22
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 = 9207703 / 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(16936)' / data format of field: variable length array
TTYPE2 = 'GZIP_COMPRESSED_DATA' / label for field 2
TFORM2 = '1PB(47)' / 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 = -0.9627664821312 / Coordinate transformation matrix element
PC1_2 = -0.27033442415779 / Coordinate transformation matrix element
PC2_1 = 0.27033442415779 / Coordinate transformation matrix element
PC2_2 = -0.9627664821312 / 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 = 175.80587768555 / [deg] Coordinate value at reference point
CRVAL2 = 49.874713897705 / [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 = 49.874713897705 / [deg] Native latitude of celestial pole
MJDREF = 0.0 / [d] MJD of fiducial time
RADESYS = 'ICRS' / Equatorial coordinate system
FILETIME = '2025-08-21 21:16:34'
SURVEY = 'hdr5'
MASK = 'True'
CONVOLVE = 'False'
INTERP = 'linear'
FFSKY = 'False'
FFSKYRC = 'False'
SHOTID = 20220327011
FIELD = 'dex-spring'
OBJID = 'DEXsp1756'
DATE = 20220327
OBSID = 11
RA = 175.740529
DEC = 49.963339
PA = 72.765832
N_IFU = 76
FWHM = 1.6117812
FWHM_ERR = 0.15842858
RESPONSE = 0.1463
RELFLUX1 = 0.8951519
RELFLUX2 = 1.0421143
RELFLUX3 = 0.95623606
AMBTEMP = 19.233889
DATEVOBS = '20220327v011'
DEWPOINT = -16.733667
EXPNUM1 = 1
EXPNUM2 = 2
EXPNUM3 = 3
EXPTIME1 = 367.84973
EXPTIME2 = 368.4996
EXPTIME3 = 368.24966
HUMIDITY = 5.1024
MJD1 = 59665.15
MJD2 = 59665.152
MJD3 = 59665.156
OBSIND = 1
PRESSURE = 803.3867
STRUCTAZ = 45.056915
TIME = '0332159'
TRAJCDEC = 49.963707
TRAJCPA = 71.332924
TRAJCRA = 175.7402
BUNIT = '1e-17 erg s^-1 cm^-2'
SPECBW = 2.0
EXTNAME = 'ERROR' / extension name
CHECKSUM = 'UPECXMCCUMCCUMCC' / HDU checksum updated 2026-03-05T19:15:23
DATASUM = '1460736330' / data unit checksum updated 2026-03-05T19:15:23
ZHECKSUM = 'Z8YQc7XPZ7XPb7XP' / HDU checksum updated 2026-03-05T19:15:23
ZDATASUM = '1828023752' / data unit checksum updated 2026-03-05T19:15:23
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 = 267492 / 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(4745)' / 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 = -0.9627664821312 / Coordinate transformation matrix element
PC1_2 = -0.27033442415779 / Coordinate transformation matrix element
PC2_1 = 0.27033442415779 / Coordinate transformation matrix element
PC2_2 = -0.9627664821312 / 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 = 175.80587768555 / [deg] Coordinate value at reference point
CRVAL2 = 49.874713897705 / [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 = 49.874713897705 / [deg] Native latitude of celestial pole
MJDREF = 0.0 / [d] MJD of fiducial time
RADESYS = 'ICRS' / Equatorial coordinate system
FILETIME = '2025-08-21 21:16:34'
SURVEY = 'hdr5'
MASK = 'True'
CONVOLVE = 'False'
INTERP = 'linear'
FFSKY = 'False'
FFSKYRC = 'False'
SHOTID = 20220327011
FIELD = 'dex-spring'
OBJID = 'DEXsp1756'
DATE = 20220327
OBSID = 11
RA = 175.740529
DEC = 49.963339
PA = 72.765832
N_IFU = 76
FWHM = 1.6117812
FWHM_ERR = 0.15842858
RESPONSE = 0.1463
RELFLUX1 = 0.8951519
RELFLUX2 = 1.0421143
RELFLUX3 = 0.95623606
AMBTEMP = 19.233889
DATEVOBS = '20220327v011'
DEWPOINT = -16.733667
EXPNUM1 = 1
EXPNUM2 = 2
EXPNUM3 = 3
EXPTIME1 = 367.84973
EXPTIME2 = 368.4996
EXPTIME3 = 368.24966
HUMIDITY = 5.1024
MJD1 = 59665.15
MJD2 = 59665.152
MJD3 = 59665.156
OBSIND = 1
PRESSURE = 803.3867
STRUCTAZ = 45.056915
TIME = '0332159'
TRAJCDEC = 49.963707
TRAJCPA = 71.332924
TRAJCRA = 175.7402
SPECBW = 2.0
EXTNAME = 'MASK' / extension name
CHECKSUM = 'YESLY9RIYCRIY9RI' / HDU checksum updated 2026-03-05T19:15:23
DATASUM = '2949935375' / data unit checksum updated 2026-03-05T19:15:23
ZHECKSUM = 'mN6nmM5mmM5mmM5m' / HDU checksum updated 2026-03-05T19:15:23
ZDATASUM = '3565343507' / data unit checksum updated 2026-03-05T19:15:23