--- header unit 0: primary ---
SIMPLE = T / conforms to FITS standard
BITPIX = 8 / array data type
NAXIS = 0 / number of array dimensions
EXTEND = T
CHECKSUM = 'A8bBB6ZAA6bAA6ZA' / HDU checksum updated 2026-03-05T21:57:30
DATASUM = '0' / data unit checksum updated 2026-03-05T21:57:30
--- 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 = 8784165 / 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(13934)' / 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 = -0.9674685172707 / Coordinate transformation matrix element
PC1_2 = -0.25299143876827 / Coordinate transformation matrix element
PC2_1 = 0.25299143876827 / Coordinate transformation matrix element
PC2_2 = -0.9674685172707 / 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 = 229.42805480957 / [deg] Coordinate value at reference point
CRVAL2 = 49.730621337891 / [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 = 49.730621337891 / [deg] Native latitude of celestial pole
MJDREF = 0.0 / [d] MJD of fiducial time
RADESYS = 'ICRS' / Equatorial coordinate system
FILETIME = '2025-08-22 05:01:07'
SURVEY = 'hdr5'
MASK = 'True'
CONVOLVE = 'False'
INTERP = 'linear'
FFSKY = 'False'
FFSKYRC = 'False'
SHOTID = 20240412011
FIELD = 'dex-spring'
OBJID = 'DEXsp6867'
DATE = 20240412
OBSID = 11
RA = 229.419808
DEC = 49.598915
PA = 73.795399
N_IFU = 77
FWHM = 2.180919
FWHM_ERR = 0.18749961
RESPONSE = 0.1248
RELFLUX1 = 0.7088653
RELFLUX2 = 0.90194374
RELFLUX3 = 1.3672286
AMBTEMP = 12.1472225
DATEVOBS = '20240412v011'
DEWPOINT = -6.552778
EXPNUM1 = 1
EXPNUM2 = 2
EXPNUM3 = 3
EXPTIME1 = 607.1492
EXPTIME2 = 607.89923
EXPTIME3 = 608.01526
HUMIDITY = 27.201
MJD1 = 60412.242
MJD2 = 60412.25
MJD3 = 60412.258
OBSIND = 1
PRESSURE = 803.14966
STRUCTAZ = 45.830284
TIME = '0550173'
TRAJCDEC = 49.598564
TRAJCPA = 72.13187
TRAJCRA = 229.41937
BUNIT = '1e-17 erg s^-1 cm^-2'
SPECBW = 2.0
EXTNAME = 'DATA' / extension name
CHECKSUM = 'HhTcIZQZHfQaHZQY' / HDU checksum updated 2026-03-05T21:57:31
DATASUM = '761383136' / data unit checksum updated 2026-03-05T21:57:31
ZHECKSUM = 'PBnYQ9mYPAmYP7mY' / HDU checksum updated 2026-03-05T21:57:31
ZDATASUM = '2306640429' / data unit checksum updated 2026-03-05T21:57:31
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 = 8433012 / 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(14218)' / 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 = -0.9674685172707 / Coordinate transformation matrix element
PC1_2 = -0.25299143876827 / Coordinate transformation matrix element
PC2_1 = 0.25299143876827 / Coordinate transformation matrix element
PC2_2 = -0.9674685172707 / 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 = 229.42805480957 / [deg] Coordinate value at reference point
CRVAL2 = 49.730621337891 / [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 = 49.730621337891 / [deg] Native latitude of celestial pole
MJDREF = 0.0 / [d] MJD of fiducial time
RADESYS = 'ICRS' / Equatorial coordinate system
FILETIME = '2025-08-22 05:01:07'
SURVEY = 'hdr5'
MASK = 'True'
CONVOLVE = 'False'
INTERP = 'linear'
FFSKY = 'False'
FFSKYRC = 'False'
SHOTID = 20240412011
FIELD = 'dex-spring'
OBJID = 'DEXsp6867'
DATE = 20240412
OBSID = 11
RA = 229.419808
DEC = 49.598915
PA = 73.795399
N_IFU = 77
FWHM = 2.180919
FWHM_ERR = 0.18749961
RESPONSE = 0.1248
RELFLUX1 = 0.7088653
RELFLUX2 = 0.90194374
RELFLUX3 = 1.3672286
AMBTEMP = 12.1472225
DATEVOBS = '20240412v011'
DEWPOINT = -6.552778
EXPNUM1 = 1
EXPNUM2 = 2
EXPNUM3 = 3
EXPTIME1 = 607.1492
EXPTIME2 = 607.89923
EXPTIME3 = 608.01526
HUMIDITY = 27.201
MJD1 = 60412.242
MJD2 = 60412.25
MJD3 = 60412.258
OBSIND = 1
PRESSURE = 803.14966
STRUCTAZ = 45.830284
TIME = '0550173'
TRAJCDEC = 49.598564
TRAJCPA = 72.13187
TRAJCRA = 229.41937
BUNIT = '1e-17 erg s^-1 cm^-2'
SPECBW = 2.0
EXTNAME = 'ERROR' / extension name
CHECKSUM = 'cfMbcZMacfMacZMa' / HDU checksum updated 2026-03-05T21:57:32
DATASUM = '2868990627' / data unit checksum updated 2026-03-05T21:57:32
ZHECKSUM = '9ZKnAXIn2XIn9XIn' / HDU checksum updated 2026-03-05T21:57:32
ZDATASUM = '386213975' / data unit checksum updated 2026-03-05T21:57:32
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 = 363866 / 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(4340)' / 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 = -0.9674685172707 / Coordinate transformation matrix element
PC1_2 = -0.25299143876827 / Coordinate transformation matrix element
PC2_1 = 0.25299143876827 / Coordinate transformation matrix element
PC2_2 = -0.9674685172707 / 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 = 229.42805480957 / [deg] Coordinate value at reference point
CRVAL2 = 49.730621337891 / [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 = 49.730621337891 / [deg] Native latitude of celestial pole
MJDREF = 0.0 / [d] MJD of fiducial time
RADESYS = 'ICRS' / Equatorial coordinate system
FILETIME = '2025-08-22 05:01:07'
SURVEY = 'hdr5'
MASK = 'True'
CONVOLVE = 'False'
INTERP = 'linear'
FFSKY = 'False'
FFSKYRC = 'False'
SHOTID = 20240412011
FIELD = 'dex-spring'
OBJID = 'DEXsp6867'
DATE = 20240412
OBSID = 11
RA = 229.419808
DEC = 49.598915
PA = 73.795399
N_IFU = 77
FWHM = 2.180919
FWHM_ERR = 0.18749961
RESPONSE = 0.1248
RELFLUX1 = 0.7088653
RELFLUX2 = 0.90194374
RELFLUX3 = 1.3672286
AMBTEMP = 12.1472225
DATEVOBS = '20240412v011'
DEWPOINT = -6.552778
EXPNUM1 = 1
EXPNUM2 = 2
EXPNUM3 = 3
EXPTIME1 = 607.1492
EXPTIME2 = 607.89923
EXPTIME3 = 608.01526
HUMIDITY = 27.201
MJD1 = 60412.242
MJD2 = 60412.25
MJD3 = 60412.258
OBSIND = 1
PRESSURE = 803.14966
STRUCTAZ = 45.830284
TIME = '0550173'
TRAJCDEC = 49.598564
TRAJCPA = 72.13187
TRAJCRA = 229.41937
SPECBW = 2.0
EXTNAME = 'MASK' / extension name
CHECKSUM = 'BZHaDY9XBYGaBY9U' / HDU checksum updated 2026-03-05T21:57:32
DATASUM = '4080266085' / data unit checksum updated 2026-03-05T21:57:32
ZHECKSUM = 'kqeNkndNkndNkndN' / HDU checksum updated 2026-03-05T21:57:32
ZDATASUM = '1906801428' / data unit checksum updated 2026-03-05T21:57:32