--- header unit 0: primary ---
SIMPLE = T / conforms to FITS standard
BITPIX = 8 / array data type
NAXIS = 0 / number of array dimensions
EXTEND = T
CHECKSUM = 'C5fHD5Z9C5fEC5Z9' / HDU checksum updated 2026-03-05T21:20:29
DATASUM = '0' / data unit checksum updated 2026-03-05T21:20:29
--- 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 = 8813062 / 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(13906)' / 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 = -0.96584924838383 / Coordinate transformation matrix element
PC1_2 = -0.25910466880471 / Coordinate transformation matrix element
PC2_1 = 0.25910466880471 / Coordinate transformation matrix element
PC2_2 = -0.96584924838383 / 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 = 226.73860168457 / [deg] Coordinate value at reference point
CRVAL2 = 49.7917137146 / [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 = 49.7917137146 / [deg] Native latitude of celestial pole
MJDREF = 0.0 / [d] MJD of fiducial time
RADESYS = 'ICRS' / Equatorial coordinate system
FILETIME = '2025-08-22 03:05:09'
SURVEY = 'hdr5'
MASK = 'True'
CONVOLVE = 'False'
INTERP = 'linear'
FFSKY = 'False'
FFSKYRC = 'False'
SHOTID = 20230422011
FIELD = 'dex-spring'
OBJID = 'DEXsp3614'
DATE = 20230422
OBSID = 11
RA = 226.954996
DEC = 49.760843
PA = 73.433057
N_IFU = 75
FWHM = 1.524811
FWHM_ERR = 0.11036488
RESPONSE = 0.1475
RELFLUX1 = 0.88450694
RELFLUX2 = 1.014351
RELFLUX3 = 0.9582196
AMBTEMP = 15.292778
DATEVOBS = '20230422v011'
DEWPOINT = -15.556444
EXPNUM1 = 1
EXPNUM2 = 2
EXPNUM3 = 3
EXPTIME1 = 367.89926
EXPTIME2 = 368.19998
EXPTIME3 = 367.799
HUMIDITY = 9.3452
MJD1 = 60056.22
MJD2 = 60056.223
MJD3 = 60056.227
OBSIND = 1
PRESSURE = 802.40466
STRUCTAZ = 45.53056
TIME = '0512488'
TRAJCDEC = 49.761745
TRAJCPA = 71.82334
TRAJCRA = 226.9544
BUNIT = '1e-17 erg s^-1 cm^-2'
SPECBW = 2.0
EXTNAME = 'DATA' / extension name
CHECKSUM = 'IhAfLe1cIe8cIe8c' / HDU checksum updated 2026-03-05T21:20:29
DATASUM = '2118913400' / data unit checksum updated 2026-03-05T21:20:29
ZHECKSUM = 'IfWAJZW6IfWAIZW5' / HDU checksum updated 2026-03-05T21:20:29
ZDATASUM = '4143508922' / data unit checksum updated 2026-03-05T21:20:29
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 = 9291152 / 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(17623)' / 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 = -0.96584924838383 / Coordinate transformation matrix element
PC1_2 = -0.25910466880471 / Coordinate transformation matrix element
PC2_1 = 0.25910466880471 / Coordinate transformation matrix element
PC2_2 = -0.96584924838383 / 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 = 226.73860168457 / [deg] Coordinate value at reference point
CRVAL2 = 49.7917137146 / [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 = 49.7917137146 / [deg] Native latitude of celestial pole
MJDREF = 0.0 / [d] MJD of fiducial time
RADESYS = 'ICRS' / Equatorial coordinate system
FILETIME = '2025-08-22 03:05:09'
SURVEY = 'hdr5'
MASK = 'True'
CONVOLVE = 'False'
INTERP = 'linear'
FFSKY = 'False'
FFSKYRC = 'False'
SHOTID = 20230422011
FIELD = 'dex-spring'
OBJID = 'DEXsp3614'
DATE = 20230422
OBSID = 11
RA = 226.954996
DEC = 49.760843
PA = 73.433057
N_IFU = 75
FWHM = 1.524811
FWHM_ERR = 0.11036488
RESPONSE = 0.1475
RELFLUX1 = 0.88450694
RELFLUX2 = 1.014351
RELFLUX3 = 0.9582196
AMBTEMP = 15.292778
DATEVOBS = '20230422v011'
DEWPOINT = -15.556444
EXPNUM1 = 1
EXPNUM2 = 2
EXPNUM3 = 3
EXPTIME1 = 367.89926
EXPTIME2 = 368.19998
EXPTIME3 = 367.799
HUMIDITY = 9.3452
MJD1 = 60056.22
MJD2 = 60056.223
MJD3 = 60056.227
OBSIND = 1
PRESSURE = 802.40466
STRUCTAZ = 45.53056
TIME = '0512488'
TRAJCDEC = 49.761745
TRAJCPA = 71.82334
TRAJCRA = 226.9544
BUNIT = '1e-17 erg s^-1 cm^-2'
SPECBW = 2.0
EXTNAME = 'ERROR' / extension name
CHECKSUM = '6IgF79ZE6GdE69ZE' / HDU checksum updated 2026-03-05T21:20:30
DATASUM = '3793995927' / data unit checksum updated 2026-03-05T21:20:30
ZHECKSUM = 'He8nKd5nHd5nHd5n' / HDU checksum updated 2026-03-05T21:20:30
ZDATASUM = '3481085326' / data unit checksum updated 2026-03-05T21:20:30
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 = 423517 / 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(3832)' / 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 = -0.96584924838383 / Coordinate transformation matrix element
PC1_2 = -0.25910466880471 / Coordinate transformation matrix element
PC2_1 = 0.25910466880471 / Coordinate transformation matrix element
PC2_2 = -0.96584924838383 / 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 = 226.73860168457 / [deg] Coordinate value at reference point
CRVAL2 = 49.7917137146 / [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 = 49.7917137146 / [deg] Native latitude of celestial pole
MJDREF = 0.0 / [d] MJD of fiducial time
RADESYS = 'ICRS' / Equatorial coordinate system
FILETIME = '2025-08-22 03:05:09'
SURVEY = 'hdr5'
MASK = 'True'
CONVOLVE = 'False'
INTERP = 'linear'
FFSKY = 'False'
FFSKYRC = 'False'
SHOTID = 20230422011
FIELD = 'dex-spring'
OBJID = 'DEXsp3614'
DATE = 20230422
OBSID = 11
RA = 226.954996
DEC = 49.760843
PA = 73.433057
N_IFU = 75
FWHM = 1.524811
FWHM_ERR = 0.11036488
RESPONSE = 0.1475
RELFLUX1 = 0.88450694
RELFLUX2 = 1.014351
RELFLUX3 = 0.9582196
AMBTEMP = 15.292778
DATEVOBS = '20230422v011'
DEWPOINT = -15.556444
EXPNUM1 = 1
EXPNUM2 = 2
EXPNUM3 = 3
EXPTIME1 = 367.89926
EXPTIME2 = 368.19998
EXPTIME3 = 367.799
HUMIDITY = 9.3452
MJD1 = 60056.22
MJD2 = 60056.223
MJD3 = 60056.227
OBSIND = 1
PRESSURE = 802.40466
STRUCTAZ = 45.53056
TIME = '0512488'
TRAJCDEC = 49.761745
TRAJCPA = 71.82334
TRAJCRA = 226.9544
SPECBW = 2.0
EXTNAME = 'MASK' / extension name
CHECKSUM = '9BTAA9S32AS999S9' / HDU checksum updated 2026-03-05T21:20:31
DATASUM = '3381675743' / data unit checksum updated 2026-03-05T21:20:31
ZHECKSUM = '4UHY4UHV4UHV4UHV' / HDU checksum updated 2026-03-05T21:20:31
ZDATASUM = '3611513692' / data unit checksum updated 2026-03-05T21:20:31