--- header unit 0: primary ---
SIMPLE = T / conforms to FITS standard
BITPIX = 8 / array data type
NAXIS = 0 / number of array dimensions
EXTEND = T
CHECKSUM = 'C5hHF5Z9C5fEC5Z9' / HDU checksum updated 2026-03-05T21:50:06
DATASUM = '0' / data unit checksum updated 2026-03-05T21:50:06
--- 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 = 8776811 / 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(13892)' / 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 = -0.98326548779554 / Coordinate transformation matrix element
PC1_2 = -0.18217843041976 / Coordinate transformation matrix element
PC2_1 = 0.18217843041976 / Coordinate transformation matrix element
PC2_2 = -0.98326548779554 / 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 = 168.91516113281 / [deg] Coordinate value at reference point
CRVAL2 = 47.104839324951 / [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 = 47.104839324951 / [deg] Native latitude of celestial pole
MJDREF = 0.0 / [d] MJD of fiducial time
RADESYS = 'ICRS' / Equatorial coordinate system
FILETIME = '2025-08-22 04:34:37'
SURVEY = 'hdr5'
MASK = 'True'
CONVOLVE = 'False'
INTERP = 'linear'
FFSKY = 'False'
FFSKYRC = 'False'
SHOTID = 20231218022
FIELD = 'dex-spring'
OBJID = 'DEXsp1498'
DATE = 20231218
OBSID = 22
RA = 168.793695
DEC = 47.15836
PA = 77.953327
N_IFU = 77
FWHM = 2.2176208
FWHM_ERR = 0.19447003
RESPONSE = 0.1888
RELFLUX1 = 0.83740014
RELFLUX2 = 1.1176353
RELFLUX3 = 1.0468968
AMBTEMP = 9.835
DATEVOBS = '20231218v022'
DEWPOINT = -10.481112
EXPNUM1 = 1
EXPNUM2 = 2
EXPNUM3 = 3
EXPTIME1 = 607.5746
EXPTIME2 = 607.6499
EXPTIME3 = 608.1499
HUMIDITY = 20.608
MJD1 = 60296.395
MJD2 = 60296.402
MJD3 = 60296.41
OBSIND = 1
PRESSURE = 805.5879
STRUCTAZ = 50.25176
TIME = '0926375'
TRAJCDEC = 47.15905
TRAJCPA = 76.530106
TRAJCRA = 168.79333
BUNIT = '1e-17 erg s^-1 cm^-2'
SPECBW = 2.0
EXTNAME = 'DATA' / extension name
CHECKSUM = 'ZQ59ZN57ZN57ZN57' / HDU checksum updated 2026-03-05T21:50:07
DATASUM = '2652623333' / data unit checksum updated 2026-03-05T21:50:07
ZHECKSUM = 'Pl6APj32Pj38Pj38' / HDU checksum updated 2026-03-05T21:50:07
ZDATASUM = '3200255850' / data unit checksum updated 2026-03-05T21:50:07
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 = 8760327 / 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(15095)' / 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 = -0.98326548779554 / Coordinate transformation matrix element
PC1_2 = -0.18217843041976 / Coordinate transformation matrix element
PC2_1 = 0.18217843041976 / Coordinate transformation matrix element
PC2_2 = -0.98326548779554 / 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 = 168.91516113281 / [deg] Coordinate value at reference point
CRVAL2 = 47.104839324951 / [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 = 47.104839324951 / [deg] Native latitude of celestial pole
MJDREF = 0.0 / [d] MJD of fiducial time
RADESYS = 'ICRS' / Equatorial coordinate system
FILETIME = '2025-08-22 04:34:37'
SURVEY = 'hdr5'
MASK = 'True'
CONVOLVE = 'False'
INTERP = 'linear'
FFSKY = 'False'
FFSKYRC = 'False'
SHOTID = 20231218022
FIELD = 'dex-spring'
OBJID = 'DEXsp1498'
DATE = 20231218
OBSID = 22
RA = 168.793695
DEC = 47.15836
PA = 77.953327
N_IFU = 77
FWHM = 2.2176208
FWHM_ERR = 0.19447003
RESPONSE = 0.1888
RELFLUX1 = 0.83740014
RELFLUX2 = 1.1176353
RELFLUX3 = 1.0468968
AMBTEMP = 9.835
DATEVOBS = '20231218v022'
DEWPOINT = -10.481112
EXPNUM1 = 1
EXPNUM2 = 2
EXPNUM3 = 3
EXPTIME1 = 607.5746
EXPTIME2 = 607.6499
EXPTIME3 = 608.1499
HUMIDITY = 20.608
MJD1 = 60296.395
MJD2 = 60296.402
MJD3 = 60296.41
OBSIND = 1
PRESSURE = 805.5879
STRUCTAZ = 50.25176
TIME = '0926375'
TRAJCDEC = 47.15905
TRAJCPA = 76.530106
TRAJCRA = 168.79333
BUNIT = '1e-17 erg s^-1 cm^-2'
SPECBW = 2.0
EXTNAME = 'ERROR' / extension name
CHECKSUM = 'ZA8eh17eZ87ef87e' / HDU checksum updated 2026-03-05T21:50:08
DATASUM = '1240949252' / data unit checksum updated 2026-03-05T21:50:08
ZHECKSUM = '3UAg3T8d3TAd3T7d' / HDU checksum updated 2026-03-05T21:50:08
ZDATASUM = '312952229' / data unit checksum updated 2026-03-05T21:50:08
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 = 556305 / 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(7404)' / 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 = -0.98326548779554 / Coordinate transformation matrix element
PC1_2 = -0.18217843041976 / Coordinate transformation matrix element
PC2_1 = 0.18217843041976 / Coordinate transformation matrix element
PC2_2 = -0.98326548779554 / 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 = 168.91516113281 / [deg] Coordinate value at reference point
CRVAL2 = 47.104839324951 / [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 = 47.104839324951 / [deg] Native latitude of celestial pole
MJDREF = 0.0 / [d] MJD of fiducial time
RADESYS = 'ICRS' / Equatorial coordinate system
FILETIME = '2025-08-22 04:34:37'
SURVEY = 'hdr5'
MASK = 'True'
CONVOLVE = 'False'
INTERP = 'linear'
FFSKY = 'False'
FFSKYRC = 'False'
SHOTID = 20231218022
FIELD = 'dex-spring'
OBJID = 'DEXsp1498'
DATE = 20231218
OBSID = 22
RA = 168.793695
DEC = 47.15836
PA = 77.953327
N_IFU = 77
FWHM = 2.2176208
FWHM_ERR = 0.19447003
RESPONSE = 0.1888
RELFLUX1 = 0.83740014
RELFLUX2 = 1.1176353
RELFLUX3 = 1.0468968
AMBTEMP = 9.835
DATEVOBS = '20231218v022'
DEWPOINT = -10.481112
EXPNUM1 = 1
EXPNUM2 = 2
EXPNUM3 = 3
EXPTIME1 = 607.5746
EXPTIME2 = 607.6499
EXPTIME3 = 608.1499
HUMIDITY = 20.608
MJD1 = 60296.395
MJD2 = 60296.402
MJD3 = 60296.41
OBSIND = 1
PRESSURE = 805.5879
STRUCTAZ = 50.25176
TIME = '0926375'
TRAJCDEC = 47.15905
TRAJCPA = 76.530106
TRAJCRA = 168.79333
SPECBW = 2.0
EXTNAME = 'MASK' / extension name
CHECKSUM = 'JBFVKAFUJAFUJAFU' / HDU checksum updated 2026-03-05T21:50:08
DATASUM = '232137840' / data unit checksum updated 2026-03-05T21:50:08
ZHECKSUM = '4HVB59VA4EVA49VA' / HDU checksum updated 2026-03-05T21:50:08
ZDATASUM = '625323048' / data unit checksum updated 2026-03-05T21:50:08