--- header unit 0: primary ---
SIMPLE = T / conforms to FITS standard
BITPIX = 8 / array data type
NAXIS = 0 / number of array dimensions
EXTEND = T
CHECKSUM = 'A9dCD7ZBA7bBA7ZB' / HDU checksum updated 2026-03-05T22:03:50
DATASUM = '0' / data unit checksum updated 2026-03-05T22:03:50
--- 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 = 8846016 / 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(14641)' / 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 = 0.92774960861744 / Coordinate transformation matrix element
PC1_2 = -0.37320324718601 / Coordinate transformation matrix element
PC2_1 = 0.37320324718601 / Coordinate transformation matrix element
PC2_2 = 0.92774960861744 / 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 = 176.63624572754 / [deg] Coordinate value at reference point
CRVAL2 = 49.771125793457 / [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 = 49.771125793457 / [deg] Native latitude of celestial pole
MJDREF = 0.0 / [d] MJD of fiducial time
RADESYS = 'ICRS' / Equatorial coordinate system
FILETIME = '2025-08-22 05:20:24'
SURVEY = 'hdr5'
MASK = 'True'
CONVOLVE = 'False'
INTERP = 'linear'
FFSKY = 'False'
FFSKYRC = 'False'
SHOTID = 20240413017
FIELD = 'dex-spring'
OBJID = 'DEXsp1702'
DATE = 20240413
OBSID = 17
RA = 176.598457
DEC = 49.824573
PA = 290.363306
N_IFU = 77
FWHM = 3.0605943
FWHM_ERR = 0.1629512
RESPONSE = 0.1312
RELFLUX1 = 1.331547
RELFLUX2 = 0.9100818
RELFLUX3 = 0.753926
AMBTEMP = 13.96
DATEVOBS = '20240413v017'
DEWPOINT = -0.91333336
EXPNUM1 = 1
EXPNUM2 = 2
EXPNUM3 = 3
EXPTIME1 = 607.0494
EXPTIME2 = 607.815
EXPTIME3 = 607.3997
HUMIDITY = 35.354
MJD1 = 60413.33
MJD2 = 60413.336
MJD3 = 60413.344
OBSIND = 1
PRESSURE = 803.556
STRUCTAZ = 315.09042
TIME = '0754439'
TRAJCDEC = 49.82463
TRAJCPA = 288.85388
TRAJCRA = 176.59938
BUNIT = '1e-17 erg s^-1 cm^-2'
SPECBW = 2.0
EXTNAME = 'DATA' / extension name
CHECKSUM = 'IRKdKRKcIRKcIRKc' / HDU checksum updated 2026-03-05T22:03:51
DATASUM = '3084668645' / data unit checksum updated 2026-03-05T22:03:51
ZHECKSUM = 'Xn4FZn4DXn4DXn4D' / HDU checksum updated 2026-03-05T22:03:50
ZDATASUM = '3723045161' / data unit checksum updated 2026-03-05T22:03:50
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 = 8520578 / 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(14364)' / 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 = 0.92774960861744 / Coordinate transformation matrix element
PC1_2 = -0.37320324718601 / Coordinate transformation matrix element
PC2_1 = 0.37320324718601 / Coordinate transformation matrix element
PC2_2 = 0.92774960861744 / 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 = 176.63624572754 / [deg] Coordinate value at reference point
CRVAL2 = 49.771125793457 / [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 = 49.771125793457 / [deg] Native latitude of celestial pole
MJDREF = 0.0 / [d] MJD of fiducial time
RADESYS = 'ICRS' / Equatorial coordinate system
FILETIME = '2025-08-22 05:20:24'
SURVEY = 'hdr5'
MASK = 'True'
CONVOLVE = 'False'
INTERP = 'linear'
FFSKY = 'False'
FFSKYRC = 'False'
SHOTID = 20240413017
FIELD = 'dex-spring'
OBJID = 'DEXsp1702'
DATE = 20240413
OBSID = 17
RA = 176.598457
DEC = 49.824573
PA = 290.363306
N_IFU = 77
FWHM = 3.0605943
FWHM_ERR = 0.1629512
RESPONSE = 0.1312
RELFLUX1 = 1.331547
RELFLUX2 = 0.9100818
RELFLUX3 = 0.753926
AMBTEMP = 13.96
DATEVOBS = '20240413v017'
DEWPOINT = -0.91333336
EXPNUM1 = 1
EXPNUM2 = 2
EXPNUM3 = 3
EXPTIME1 = 607.0494
EXPTIME2 = 607.815
EXPTIME3 = 607.3997
HUMIDITY = 35.354
MJD1 = 60413.33
MJD2 = 60413.336
MJD3 = 60413.344
OBSIND = 1
PRESSURE = 803.556
STRUCTAZ = 315.09042
TIME = '0754439'
TRAJCDEC = 49.82463
TRAJCPA = 288.85388
TRAJCRA = 176.59938
BUNIT = '1e-17 erg s^-1 cm^-2'
SPECBW = 2.0
EXTNAME = 'ERROR' / extension name
CHECKSUM = '6eGV9ZGT6dGT6ZGT' / HDU checksum updated 2026-03-05T22:03:51
DATASUM = '3086752458' / data unit checksum updated 2026-03-05T22:03:51
ZHECKSUM = 'ad6aaZ4Yad4aaZ4Y' / HDU checksum updated 2026-03-05T22:03:51
ZDATASUM = '401585614' / data unit checksum updated 2026-03-05T22:03:51
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 = 842038 / 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(7735)' / 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 = 0.92774960861744 / Coordinate transformation matrix element
PC1_2 = -0.37320324718601 / Coordinate transformation matrix element
PC2_1 = 0.37320324718601 / Coordinate transformation matrix element
PC2_2 = 0.92774960861744 / 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 = 176.63624572754 / [deg] Coordinate value at reference point
CRVAL2 = 49.771125793457 / [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 = 49.771125793457 / [deg] Native latitude of celestial pole
MJDREF = 0.0 / [d] MJD of fiducial time
RADESYS = 'ICRS' / Equatorial coordinate system
FILETIME = '2025-08-22 05:20:24'
SURVEY = 'hdr5'
MASK = 'True'
CONVOLVE = 'False'
INTERP = 'linear'
FFSKY = 'False'
FFSKYRC = 'False'
SHOTID = 20240413017
FIELD = 'dex-spring'
OBJID = 'DEXsp1702'
DATE = 20240413
OBSID = 17
RA = 176.598457
DEC = 49.824573
PA = 290.363306
N_IFU = 77
FWHM = 3.0605943
FWHM_ERR = 0.1629512
RESPONSE = 0.1312
RELFLUX1 = 1.331547
RELFLUX2 = 0.9100818
RELFLUX3 = 0.753926
AMBTEMP = 13.96
DATEVOBS = '20240413v017'
DEWPOINT = -0.91333336
EXPNUM1 = 1
EXPNUM2 = 2
EXPNUM3 = 3
EXPTIME1 = 607.0494
EXPTIME2 = 607.815
EXPTIME3 = 607.3997
HUMIDITY = 35.354
MJD1 = 60413.33
MJD2 = 60413.336
MJD3 = 60413.344
OBSIND = 1
PRESSURE = 803.556
STRUCTAZ = 315.09042
TIME = '0754439'
TRAJCDEC = 49.82463
TRAJCPA = 288.85388
TRAJCRA = 176.59938
SPECBW = 2.0
EXTNAME = 'MASK' / extension name
CHECKSUM = 'AKA6DIA4AIA4AIA4' / HDU checksum updated 2026-03-05T22:03:52
DATASUM = '1637848838' / data unit checksum updated 2026-03-05T22:03:52
ZHECKSUM = 'NimXOfjXNfjXNfjX' / HDU checksum updated 2026-03-05T22:03:52
ZDATASUM = '2853148840' / data unit checksum updated 2026-03-05T22:03:52