--- header unit 0: primary ---
SIMPLE = T / conforms to FITS standard
BITPIX = 8 / array data type
NAXIS = 0 / number of array dimensions
EXTEND = T
CHECKSUM = 'A6bJB6Z9A6bGA6Z9' / HDU checksum updated 2026-03-05T18:08:30
DATASUM = '0' / data unit checksum updated 2026-03-05T18:08:30
--- 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 = 2801497 / 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(11147)' / data format of field: variable length array
TTYPE2 = 'GZIP_COMPRESSED_DATA' / label for field 2
TFORM2 = '1PB(96)' / 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 = 0.54971787253195 / Coordinate transformation matrix element
PC1_2 = 0.83535038194697 / Coordinate transformation matrix element
PC2_1 = -0.83535038194697 / Coordinate transformation matrix element
PC2_2 = 0.54971787253195 / 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 = 18.202236175537 / [deg] Coordinate value at reference point
CRVAL2 = 1.0565285682678 / [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 = 1.0565285682678 / [deg] Native latitude of celestial pole
MJDREF = 0.0 / [d] MJD of fiducial time
RADESYS = 'ICRS' / Equatorial coordinate system
FILETIME = '2025-08-21 15:27:05'
SURVEY = 'hdr5'
MASK = 'True'
CONVOLVE = 'False'
INTERP = 'linear'
FFSKY = 'False'
FFSKYRC = 'False'
SHOTID = 20201207015
FIELD = 'dex-fall'
OBJID = 'DEXfl0502'
DATE = 20201207
OBSID = 15
RA = 18.250802
DEC = 1.108504
PA = 211.79766
N_IFU = 69
FWHM = 1.8180912
FWHM_ERR = 0.25947744
RESPONSE = 0.167
RELFLUX1 = 0.9891239
RELFLUX2 = 1.038448
RELFLUX3 = 0.9614119
AMBTEMP = 5.67
DATEVOBS = '20201207v015'
DEWPOINT = -8.066112
EXPNUM1 = 1
EXPNUM2 = 2
EXPNUM3 = 3
EXPTIME1 = 367.42303
EXPTIME2 = 367.47223
EXPTIME3 = 366.9496
HUMIDITY = 32.923
MJD1 = 59190.176
MJD2 = 59190.18
MJD3 = 59190.188
OBSIND = 1
PRESSURE = 805.85876
STRUCTAZ = 215.94263
TIME = '0413019'
TRAJCDEC = 1.107781
TRAJCPA = 210.32484
TRAJCRA = 18.251505
BUNIT = '1e-17 erg s^-1 cm^-2'
SPECBW = 2.0
EXTNAME = 'DATA' / extension name
CHECKSUM = 'hbD7ka94haA4ha94' / HDU checksum updated 2026-03-05T18:08:31
DATASUM = '633331692' / data unit checksum updated 2026-03-05T18:08:31
ZHECKSUM = 'O1EAP0E0O0E7O0E7' / HDU checksum updated 2026-03-05T18:08:31
ZDATASUM = '2189624246' / data unit checksum updated 2026-03-05T18:08:31
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 = 3235080 / 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(16329)' / data format of field: variable length array
TTYPE2 = 'GZIP_COMPRESSED_DATA' / label for field 2
TFORM2 = '1PB(96)' / 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 = 0.54971787253195 / Coordinate transformation matrix element
PC1_2 = 0.83535038194697 / Coordinate transformation matrix element
PC2_1 = -0.83535038194697 / Coordinate transformation matrix element
PC2_2 = 0.54971787253195 / 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 = 18.202236175537 / [deg] Coordinate value at reference point
CRVAL2 = 1.0565285682678 / [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 = 1.0565285682678 / [deg] Native latitude of celestial pole
MJDREF = 0.0 / [d] MJD of fiducial time
RADESYS = 'ICRS' / Equatorial coordinate system
FILETIME = '2025-08-21 15:27:05'
SURVEY = 'hdr5'
MASK = 'True'
CONVOLVE = 'False'
INTERP = 'linear'
FFSKY = 'False'
FFSKYRC = 'False'
SHOTID = 20201207015
FIELD = 'dex-fall'
OBJID = 'DEXfl0502'
DATE = 20201207
OBSID = 15
RA = 18.250802
DEC = 1.108504
PA = 211.79766
N_IFU = 69
FWHM = 1.8180912
FWHM_ERR = 0.25947744
RESPONSE = 0.167
RELFLUX1 = 0.9891239
RELFLUX2 = 1.038448
RELFLUX3 = 0.9614119
AMBTEMP = 5.67
DATEVOBS = '20201207v015'
DEWPOINT = -8.066112
EXPNUM1 = 1
EXPNUM2 = 2
EXPNUM3 = 3
EXPTIME1 = 367.42303
EXPTIME2 = 367.47223
EXPTIME3 = 366.9496
HUMIDITY = 32.923
MJD1 = 59190.176
MJD2 = 59190.18
MJD3 = 59190.188
OBSIND = 1
PRESSURE = 805.85876
STRUCTAZ = 215.94263
TIME = '0413019'
TRAJCDEC = 1.107781
TRAJCPA = 210.32484
TRAJCRA = 18.251505
BUNIT = '1e-17 erg s^-1 cm^-2'
SPECBW = 2.0
EXTNAME = 'ERROR' / extension name
CHECKSUM = '5L6ZAK3Z8K3ZAK3Z' / HDU checksum updated 2026-03-05T18:08:32
DATASUM = '3525164990' / data unit checksum updated 2026-03-05T18:08:32
ZHECKSUM = '5Q9VAQ6V5Q6VAQ6V' / HDU checksum updated 2026-03-05T18:08:32
ZDATASUM = '3854269653' / data unit checksum updated 2026-03-05T18:08:32
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 = 1771409 / 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(6929)' / 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 = 0.54971787253195 / Coordinate transformation matrix element
PC1_2 = 0.83535038194697 / Coordinate transformation matrix element
PC2_1 = -0.83535038194697 / Coordinate transformation matrix element
PC2_2 = 0.54971787253195 / 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 = 18.202236175537 / [deg] Coordinate value at reference point
CRVAL2 = 1.0565285682678 / [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 = 1.0565285682678 / [deg] Native latitude of celestial pole
MJDREF = 0.0 / [d] MJD of fiducial time
RADESYS = 'ICRS' / Equatorial coordinate system
FILETIME = '2025-08-21 15:27:05'
SURVEY = 'hdr5'
MASK = 'True'
CONVOLVE = 'False'
INTERP = 'linear'
FFSKY = 'False'
FFSKYRC = 'False'
SHOTID = 20201207015
FIELD = 'dex-fall'
OBJID = 'DEXfl0502'
DATE = 20201207
OBSID = 15
RA = 18.250802
DEC = 1.108504
PA = 211.79766
N_IFU = 69
FWHM = 1.8180912
FWHM_ERR = 0.25947744
RESPONSE = 0.167
RELFLUX1 = 0.9891239
RELFLUX2 = 1.038448
RELFLUX3 = 0.9614119
AMBTEMP = 5.67
DATEVOBS = '20201207v015'
DEWPOINT = -8.066112
EXPNUM1 = 1
EXPNUM2 = 2
EXPNUM3 = 3
EXPTIME1 = 367.42303
EXPTIME2 = 367.47223
EXPTIME3 = 366.9496
HUMIDITY = 32.923
MJD1 = 59190.176
MJD2 = 59190.18
MJD3 = 59190.188
OBSIND = 1
PRESSURE = 805.85876
STRUCTAZ = 215.94263
TIME = '0413019'
TRAJCDEC = 1.107781
TRAJCPA = 210.32484
TRAJCRA = 18.251505
SPECBW = 2.0
EXTNAME = 'MASK' / extension name
CHECKSUM = 'YClEa9iCYAiCa9iC' / HDU checksum updated 2026-03-05T18:08:32
DATASUM = '1568514344' / data unit checksum updated 2026-03-05T18:08:32
ZHECKSUM = '9cE4EZE29aE2CYE2' / HDU checksum updated 2026-03-05T18:08:32
ZDATASUM = '1922360395' / data unit checksum updated 2026-03-05T18:08:32