--- header unit 0: primary ---
SIMPLE = T / conforms to FITS standard
BITPIX = 8 / array data type
NAXIS = 0 / number of array dimensions
EXTEND = T
CHECKSUM = '96bJJ6Z996aGG6Y9' / HDU checksum updated 2026-03-05T20:48:44
DATASUM = '0' / data unit checksum updated 2026-03-05T20:48:44
--- 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 = 8681367 / 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(13896)' / 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 = 0.91915180547443 / Coordinate transformation matrix element
PC1_2 = -0.39390348880543 / Coordinate transformation matrix element
PC2_1 = 0.39390348880543 / Coordinate transformation matrix element
PC2_2 = 0.91915180547443 / 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 = 205.19389343262 / [deg] Coordinate value at reference point
CRVAL2 = 50.841167449951 / [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 = 50.841167449951 / [deg] Native latitude of celestial pole
MJDREF = 0.0 / [d] MJD of fiducial time
RADESYS = 'ICRS' / Equatorial coordinate system
FILETIME = '2025-08-21 22:13:11'
SURVEY = 'hdr5'
MASK = 'True'
CONVOLVE = 'False'
INTERP = 'linear'
FFSKY = 'False'
FFSKYRC = 'False'
SHOTID = 20220530018
FIELD = 'dex-spring'
OBJID = 'DEXsp0336'
DATE = 20220530
OBSID = 18
RA = 205.296619
DEC = 50.740996
PA = 291.647605
N_IFU = 76
FWHM = 2.471695
FWHM_ERR = 0.07682983
RESPONSE = 0.1821
RELFLUX1 = 0.9547046
RELFLUX2 = 1.0358752
RELFLUX3 = 0.98706806
AMBTEMP = 22.392221
DATEVOBS = '20220530v018'
DEWPOINT = -3.7872221
EXPNUM1 = 1
EXPNUM2 = 2
EXPNUM3 = 3
EXPTIME1 = 487.69922
EXPTIME2 = 488.52722
EXPTIME3 = 487.49927
HUMIDITY = 13.78
MJD1 = 59729.266
MJD2 = 59729.273
MJD3 = 59729.28
OBSIND = 1
PRESSURE = 795.2594
STRUCTAZ = 316.2525
TIME = '0624478'
TRAJCDEC = 50.740143
TRAJCPA = 290.07465
TRAJCRA = 205.29596
BUNIT = '1e-17 erg s^-1 cm^-2'
SPECBW = 2.0
EXTNAME = 'DATA' / extension name
CHECKSUM = 'RpKZUoIWRoIWRoIW' / HDU checksum updated 2026-03-05T20:48:45
DATASUM = '4229242667' / data unit checksum updated 2026-03-05T20:48:45
ZHECKSUM = 'l2a6n1T4l1Z4l1Z4' / HDU checksum updated 2026-03-05T20:48:45
ZDATASUM = '2702890656' / data unit checksum updated 2026-03-05T20:48:45
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 = 9659971 / 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(19589)' / 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 = 0.91915180547443 / Coordinate transformation matrix element
PC1_2 = -0.39390348880543 / Coordinate transformation matrix element
PC2_1 = 0.39390348880543 / Coordinate transformation matrix element
PC2_2 = 0.91915180547443 / 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 = 205.19389343262 / [deg] Coordinate value at reference point
CRVAL2 = 50.841167449951 / [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 = 50.841167449951 / [deg] Native latitude of celestial pole
MJDREF = 0.0 / [d] MJD of fiducial time
RADESYS = 'ICRS' / Equatorial coordinate system
FILETIME = '2025-08-21 22:13:11'
SURVEY = 'hdr5'
MASK = 'True'
CONVOLVE = 'False'
INTERP = 'linear'
FFSKY = 'False'
FFSKYRC = 'False'
SHOTID = 20220530018
FIELD = 'dex-spring'
OBJID = 'DEXsp0336'
DATE = 20220530
OBSID = 18
RA = 205.296619
DEC = 50.740996
PA = 291.647605
N_IFU = 76
FWHM = 2.471695
FWHM_ERR = 0.07682983
RESPONSE = 0.1821
RELFLUX1 = 0.9547046
RELFLUX2 = 1.0358752
RELFLUX3 = 0.98706806
AMBTEMP = 22.392221
DATEVOBS = '20220530v018'
DEWPOINT = -3.7872221
EXPNUM1 = 1
EXPNUM2 = 2
EXPNUM3 = 3
EXPTIME1 = 487.69922
EXPTIME2 = 488.52722
EXPTIME3 = 487.49927
HUMIDITY = 13.78
MJD1 = 59729.266
MJD2 = 59729.273
MJD3 = 59729.28
OBSIND = 1
PRESSURE = 795.2594
STRUCTAZ = 316.2525
TIME = '0624478'
TRAJCDEC = 50.740143
TRAJCPA = 290.07465
TRAJCRA = 205.29596
BUNIT = '1e-17 erg s^-1 cm^-2'
SPECBW = 2.0
EXTNAME = 'ERROR' / extension name
CHECKSUM = 'EAqdG0ndE7ndE7nd' / HDU checksum updated 2026-03-05T20:48:45
DATASUM = '3164725179' / data unit checksum updated 2026-03-05T20:48:45
ZHECKSUM = 'F5T6F5S3F5S3F5S3' / HDU checksum updated 2026-03-05T20:48:45
ZDATASUM = '2318910729' / data unit checksum updated 2026-03-05T20:48:45
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 = 986367 / 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(8789)' / 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 = 0.91915180547443 / Coordinate transformation matrix element
PC1_2 = -0.39390348880543 / Coordinate transformation matrix element
PC2_1 = 0.39390348880543 / Coordinate transformation matrix element
PC2_2 = 0.91915180547443 / 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 = 205.19389343262 / [deg] Coordinate value at reference point
CRVAL2 = 50.841167449951 / [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 = 50.841167449951 / [deg] Native latitude of celestial pole
MJDREF = 0.0 / [d] MJD of fiducial time
RADESYS = 'ICRS' / Equatorial coordinate system
FILETIME = '2025-08-21 22:13:11'
SURVEY = 'hdr5'
MASK = 'True'
CONVOLVE = 'False'
INTERP = 'linear'
FFSKY = 'False'
FFSKYRC = 'False'
SHOTID = 20220530018
FIELD = 'dex-spring'
OBJID = 'DEXsp0336'
DATE = 20220530
OBSID = 18
RA = 205.296619
DEC = 50.740996
PA = 291.647605
N_IFU = 76
FWHM = 2.471695
FWHM_ERR = 0.07682983
RESPONSE = 0.1821
RELFLUX1 = 0.9547046
RELFLUX2 = 1.0358752
RELFLUX3 = 0.98706806
AMBTEMP = 22.392221
DATEVOBS = '20220530v018'
DEWPOINT = -3.7872221
EXPNUM1 = 1
EXPNUM2 = 2
EXPNUM3 = 3
EXPTIME1 = 487.69922
EXPTIME2 = 488.52722
EXPTIME3 = 487.49927
HUMIDITY = 13.78
MJD1 = 59729.266
MJD2 = 59729.273
MJD3 = 59729.28
OBSIND = 1
PRESSURE = 795.2594
STRUCTAZ = 316.2525
TIME = '0624478'
TRAJCDEC = 50.740143
TRAJCPA = 290.07465
TRAJCRA = 205.29596
SPECBW = 2.0
EXTNAME = 'MASK' / extension name
CHECKSUM = 'BdOKBbMJBbMJBbMJ' / HDU checksum updated 2026-03-05T20:48:46
DATASUM = '1065544037' / data unit checksum updated 2026-03-05T20:48:46
ZHECKSUM = 'dNVKfNTKdNTKdNTK' / HDU checksum updated 2026-03-05T20:48:46
ZDATASUM = '4012918285' / data unit checksum updated 2026-03-05T20:48:46