--- header unit 0: primary ---
SIMPLE = T / conforms to FITS standard
BITPIX = 8 / array data type
NAXIS = 0 / number of array dimensions
EXTEND = T
CHECKSUM = 'B4eCD3Z9B3dCB3Z9' / HDU checksum updated 2026-03-05T19:14:29
DATASUM = '0' / data unit checksum updated 2026-03-05T19:14:29
--- 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 = 8850117 / 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(14067)' / data format of field: variable length array
TTYPE2 = 'GZIP_COMPRESSED_DATA' / label for field 2
TFORM2 = '1PB(82)' / 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 = -0.95331453682595 / Coordinate transformation matrix element
PC1_2 = -0.30197912821306 / Coordinate transformation matrix element
PC2_1 = 0.30197912821306 / Coordinate transformation matrix element
PC2_2 = -0.95331453682595 / 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 = 243.37811279297 / [deg] Coordinate value at reference point
CRVAL2 = 50.751808166504 / [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 = 50.751808166504 / [deg] Native latitude of celestial pole
MJDREF = 0.0 / [d] MJD of fiducial time
RADESYS = 'ICRS' / Equatorial coordinate system
FILETIME = '2025-08-21 21:14:15'
SURVEY = 'hdr5'
MASK = 'True'
CONVOLVE = 'False'
INTERP = 'linear'
FFSKY = 'False'
FFSKYRC = 'False'
SHOTID = 20220403023
FIELD = 'dex-spring'
OBJID = 'DEXsp6599'
DATE = 20220403
OBSID = 23
RA = 243.528928
DEC = 50.858309
PA = 70.873487
N_IFU = 74
FWHM = 1.7930874
FWHM_ERR = 0.13253824
RESPONSE = 0.1454
RELFLUX1 = 1.1183066
RELFLUX2 = 1.00943
RELFLUX3 = 0.83192414
AMBTEMP = 15.816112
DATEVOBS = '20220403v023'
DEWPOINT = 1.2083334
EXPNUM1 = 1
EXPNUM2 = 2
EXPNUM3 = 3
EXPTIME1 = 487.69876
EXPTIME2 = 488.1581
EXPTIME3 = 488.52222
HUMIDITY = 32.692
MJD1 = 59672.336
MJD2 = 59672.344
MJD3 = 59672.348
OBSIND = 1
PRESSURE = 802.7095
STRUCTAZ = 43.06798
TIME = '0803171'
TRAJCDEC = 50.859184
TRAJCPA = 69.2336
TRAJCRA = 243.52892
BUNIT = '1e-17 erg s^-1 cm^-2'
SPECBW = 2.0
EXTNAME = 'DATA' / extension name
CHECKSUM = '8CDI9ABI8ABI8ABI' / HDU checksum updated 2026-03-05T19:14:29
DATASUM = '3361743911' / data unit checksum updated 2026-03-05T19:14:29
ZHECKSUM = 'VjMaWjMWVjMaVjMU' / HDU checksum updated 2026-03-05T19:14:29
ZDATASUM = '3023872300' / data unit checksum updated 2026-03-05T19:14:29
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 = 8838176 / 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(15523)' / data format of field: variable length array
TTYPE2 = 'GZIP_COMPRESSED_DATA' / label for field 2
TFORM2 = '1PB(82)' / 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 = -0.95331453682595 / Coordinate transformation matrix element
PC1_2 = -0.30197912821306 / Coordinate transformation matrix element
PC2_1 = 0.30197912821306 / Coordinate transformation matrix element
PC2_2 = -0.95331453682595 / 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 = 243.37811279297 / [deg] Coordinate value at reference point
CRVAL2 = 50.751808166504 / [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 = 50.751808166504 / [deg] Native latitude of celestial pole
MJDREF = 0.0 / [d] MJD of fiducial time
RADESYS = 'ICRS' / Equatorial coordinate system
FILETIME = '2025-08-21 21:14:15'
SURVEY = 'hdr5'
MASK = 'True'
CONVOLVE = 'False'
INTERP = 'linear'
FFSKY = 'False'
FFSKYRC = 'False'
SHOTID = 20220403023
FIELD = 'dex-spring'
OBJID = 'DEXsp6599'
DATE = 20220403
OBSID = 23
RA = 243.528928
DEC = 50.858309
PA = 70.873487
N_IFU = 74
FWHM = 1.7930874
FWHM_ERR = 0.13253824
RESPONSE = 0.1454
RELFLUX1 = 1.1183066
RELFLUX2 = 1.00943
RELFLUX3 = 0.83192414
AMBTEMP = 15.816112
DATEVOBS = '20220403v023'
DEWPOINT = 1.2083334
EXPNUM1 = 1
EXPNUM2 = 2
EXPNUM3 = 3
EXPTIME1 = 487.69876
EXPTIME2 = 488.1581
EXPTIME3 = 488.52222
HUMIDITY = 32.692
MJD1 = 59672.336
MJD2 = 59672.344
MJD3 = 59672.348
OBSIND = 1
PRESSURE = 802.7095
STRUCTAZ = 43.06798
TIME = '0803171'
TRAJCDEC = 50.859184
TRAJCPA = 69.2336
TRAJCRA = 243.52892
BUNIT = '1e-17 erg s^-1 cm^-2'
SPECBW = 2.0
EXTNAME = 'ERROR' / extension name
CHECKSUM = 'OefaPcfYOcfaOcfW' / HDU checksum updated 2026-03-05T19:14:30
DATASUM = '3651874064' / data unit checksum updated 2026-03-05T19:14:30
ZHECKSUM = '7AVH89UG7AUG79UG' / HDU checksum updated 2026-03-05T19:14:30
ZDATASUM = '1427696245' / data unit checksum updated 2026-03-05T19:14:30
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 = 2758954 / 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(16443)' / 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 = -0.95331453682595 / Coordinate transformation matrix element
PC1_2 = -0.30197912821306 / Coordinate transformation matrix element
PC2_1 = 0.30197912821306 / Coordinate transformation matrix element
PC2_2 = -0.95331453682595 / 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 = 243.37811279297 / [deg] Coordinate value at reference point
CRVAL2 = 50.751808166504 / [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 = 50.751808166504 / [deg] Native latitude of celestial pole
MJDREF = 0.0 / [d] MJD of fiducial time
RADESYS = 'ICRS' / Equatorial coordinate system
FILETIME = '2025-08-21 21:14:15'
SURVEY = 'hdr5'
MASK = 'True'
CONVOLVE = 'False'
INTERP = 'linear'
FFSKY = 'False'
FFSKYRC = 'False'
SHOTID = 20220403023
FIELD = 'dex-spring'
OBJID = 'DEXsp6599'
DATE = 20220403
OBSID = 23
RA = 243.528928
DEC = 50.858309
PA = 70.873487
N_IFU = 74
FWHM = 1.7930874
FWHM_ERR = 0.13253824
RESPONSE = 0.1454
RELFLUX1 = 1.1183066
RELFLUX2 = 1.00943
RELFLUX3 = 0.83192414
AMBTEMP = 15.816112
DATEVOBS = '20220403v023'
DEWPOINT = 1.2083334
EXPNUM1 = 1
EXPNUM2 = 2
EXPNUM3 = 3
EXPTIME1 = 487.69876
EXPTIME2 = 488.1581
EXPTIME3 = 488.52222
HUMIDITY = 32.692
MJD1 = 59672.336
MJD2 = 59672.344
MJD3 = 59672.348
OBSIND = 1
PRESSURE = 802.7095
STRUCTAZ = 43.06798
TIME = '0803171'
TRAJCDEC = 50.859184
TRAJCPA = 69.2336
TRAJCRA = 243.52892
SPECBW = 2.0
EXTNAME = 'MASK' / extension name
CHECKSUM = 'FR1nIO1kFO1kFO1k' / HDU checksum updated 2026-03-05T19:14:31
DATASUM = '2114895716' / data unit checksum updated 2026-03-05T19:14:31
ZHECKSUM = 'hINOiHKLhHKLhHKL' / HDU checksum updated 2026-03-05T19:14:30
ZDATASUM = '3862799926' / data unit checksum updated 2026-03-05T19:14:30