--- header unit 0: primary ---
SIMPLE = T / conforms to FITS standard
BITPIX = 8 / array data type
NAXIS = 0 / number of array dimensions
EXTEND = T
CHECKSUM = 'B7eHB5Z9B5bGB5Z9' / HDU checksum updated 2026-03-05T16:36:21
DATASUM = '0' / data unit checksum updated 2026-03-05T16:36:21
--- 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 = 8692303 / 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(13905)' / 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 = 0.90286565179333 / Coordinate transformation matrix element
PC1_2 = -0.42992280099084 / Coordinate transformation matrix element
PC2_1 = 0.42992280099084 / Coordinate transformation matrix element
PC2_2 = 0.90286565179333 / 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 = 177.74867248535 / [deg] Coordinate value at reference point
CRVAL2 = 51.926734924316 / [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 = 51.926734924316 / [deg] Native latitude of celestial pole
MJDREF = 0.0 / [d] MJD of fiducial time
RADESYS = 'ICRS' / Equatorial coordinate system
FILETIME = '2025-08-21 05:37:44'
SURVEY = 'hdr5'
MASK = 'True'
CONVOLVE = 'False'
INTERP = 'linear'
FFSKY = 'False'
FFSKYRC = 'False'
SHOTID = 20190506010
FIELD = 'dex-spring'
OBJID = 'DEXsp0939'
DATE = 20190506
OBSID = 10
RA = 177.659703
DEC = 51.905403
PA = 293.912661
N_IFU = 45
FWHM = 1.820629
FWHM_ERR = 0.7298748
RESPONSE = 0.1619
RELFLUX1 = 0.92001
RELFLUX2 = 0.9877757
RELFLUX3 = 1.0344957
AMBTEMP = 12.636666
DATEVOBS = '20190506v010'
DEWPOINT = 7.5044446
EXPNUM1 = 1
EXPNUM2 = 2
EXPNUM3 = 3
EXPTIME1 = 367.2983
EXPTIME2 = 367.59842
EXPTIME3 = 367.9463
HUMIDITY = 68.948
MJD1 = 58609.258
MJD2 = 58609.26
MJD3 = 58609.266
OBSIND = 1
PRESSURE = 799.2215
STRUCTAZ = 318.45987
TIME = '0611166'
TRAJCDEC = 51.905327
TRAJCPA = 292.45956
TRAJCRA = 177.65936
BUNIT = '1e-17 erg s^-1 cm^-2'
SPECBW = 2.0
EXTNAME = 'DATA' / extension name
CHECKSUM = 'BNJUCN9UBNGUBN9U' / HDU checksum updated 2026-03-05T16:36:21
DATASUM = '1484966776' / data unit checksum updated 2026-03-05T16:36:21
ZHECKSUM = 'mDCQpCBNmCBNmCBN' / HDU checksum updated 2026-03-05T16:36:21
ZDATASUM = '1986555049' / data unit checksum updated 2026-03-05T16:36:21
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 = 9276397 / 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(18161)' / 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 = 0.90286565179333 / Coordinate transformation matrix element
PC1_2 = -0.42992280099084 / Coordinate transformation matrix element
PC2_1 = 0.42992280099084 / Coordinate transformation matrix element
PC2_2 = 0.90286565179333 / 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 = 177.74867248535 / [deg] Coordinate value at reference point
CRVAL2 = 51.926734924316 / [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 = 51.926734924316 / [deg] Native latitude of celestial pole
MJDREF = 0.0 / [d] MJD of fiducial time
RADESYS = 'ICRS' / Equatorial coordinate system
FILETIME = '2025-08-21 05:37:44'
SURVEY = 'hdr5'
MASK = 'True'
CONVOLVE = 'False'
INTERP = 'linear'
FFSKY = 'False'
FFSKYRC = 'False'
SHOTID = 20190506010
FIELD = 'dex-spring'
OBJID = 'DEXsp0939'
DATE = 20190506
OBSID = 10
RA = 177.659703
DEC = 51.905403
PA = 293.912661
N_IFU = 45
FWHM = 1.820629
FWHM_ERR = 0.7298748
RESPONSE = 0.1619
RELFLUX1 = 0.92001
RELFLUX2 = 0.9877757
RELFLUX3 = 1.0344957
AMBTEMP = 12.636666
DATEVOBS = '20190506v010'
DEWPOINT = 7.5044446
EXPNUM1 = 1
EXPNUM2 = 2
EXPNUM3 = 3
EXPTIME1 = 367.2983
EXPTIME2 = 367.59842
EXPTIME3 = 367.9463
HUMIDITY = 68.948
MJD1 = 58609.258
MJD2 = 58609.26
MJD3 = 58609.266
OBSIND = 1
PRESSURE = 799.2215
STRUCTAZ = 318.45987
TIME = '0611166'
TRAJCDEC = 51.905327
TRAJCPA = 292.45956
TRAJCRA = 177.65936
BUNIT = '1e-17 erg s^-1 cm^-2'
SPECBW = 2.0
EXTNAME = 'ERROR' / extension name
CHECKSUM = '4oFP4l9P4lCP4l9P' / HDU checksum updated 2026-03-05T16:36:22
DATASUM = '1166908813' / data unit checksum updated 2026-03-05T16:36:22
ZHECKSUM = 'lgFZmfDWlfDWlfDW' / HDU checksum updated 2026-03-05T16:36:22
ZDATASUM = '3714398332' / data unit checksum updated 2026-03-05T16:36:22
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 = 676275 / 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(8430)' / 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 = 0.90286565179333 / Coordinate transformation matrix element
PC1_2 = -0.42992280099084 / Coordinate transformation matrix element
PC2_1 = 0.42992280099084 / Coordinate transformation matrix element
PC2_2 = 0.90286565179333 / 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 = 177.74867248535 / [deg] Coordinate value at reference point
CRVAL2 = 51.926734924316 / [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 = 51.926734924316 / [deg] Native latitude of celestial pole
MJDREF = 0.0 / [d] MJD of fiducial time
RADESYS = 'ICRS' / Equatorial coordinate system
FILETIME = '2025-08-21 05:37:44'
SURVEY = 'hdr5'
MASK = 'True'
CONVOLVE = 'False'
INTERP = 'linear'
FFSKY = 'False'
FFSKYRC = 'False'
SHOTID = 20190506010
FIELD = 'dex-spring'
OBJID = 'DEXsp0939'
DATE = 20190506
OBSID = 10
RA = 177.659703
DEC = 51.905403
PA = 293.912661
N_IFU = 45
FWHM = 1.820629
FWHM_ERR = 0.7298748
RESPONSE = 0.1619
RELFLUX1 = 0.92001
RELFLUX2 = 0.9877757
RELFLUX3 = 1.0344957
AMBTEMP = 12.636666
DATEVOBS = '20190506v010'
DEWPOINT = 7.5044446
EXPNUM1 = 1
EXPNUM2 = 2
EXPNUM3 = 3
EXPTIME1 = 367.2983
EXPTIME2 = 367.59842
EXPTIME3 = 367.9463
HUMIDITY = 68.948
MJD1 = 58609.258
MJD2 = 58609.26
MJD3 = 58609.266
OBSIND = 1
PRESSURE = 799.2215
STRUCTAZ = 318.45987
TIME = '0611166'
TRAJCDEC = 51.905327
TRAJCPA = 292.45956
TRAJCRA = 177.65936
SPECBW = 2.0
EXTNAME = 'MASK' / extension name
CHECKSUM = 'Oa8aOZ8WOa8aOY8W' / HDU checksum updated 2026-03-05T16:36:23
DATASUM = '3494948995' / data unit checksum updated 2026-03-05T16:36:23
ZHECKSUM = 'S68FU45FS45FS45F' / HDU checksum updated 2026-03-05T16:36:23
ZDATASUM = '1772246374' / data unit checksum updated 2026-03-05T16:36:23