--- header unit 0: primary ---
SIMPLE = T / conforms to FITS standard
BITPIX = 8 / array data type
NAXIS = 0 / number of array dimensions
EXTEND = T
CHECKSUM = 'B4dFC4Z9B4dCB4Z9' / HDU checksum updated 2026-03-05T18:22:56
DATASUM = '0' / data unit checksum updated 2026-03-05T18:22:56
--- 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 = 8771319 / 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(13900)' / data format of field: variable length array
TTYPE2 = 'GZIP_COMPRESSED_DATA' / label for field 2
TFORM2 = '1PB(51)' / 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 = -0.056829888674124 / Coordinate transformation matrix element
PC1_2 = -0.99838387594817 / Coordinate transformation matrix element
PC2_1 = 0.99838387594817 / Coordinate transformation matrix element
PC2_2 = -0.056829888674124 / 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 = 266.0559387207 / [deg] Coordinate value at reference point
CRVAL2 = 67.129455566406 / [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 = 67.129455566406 / [deg] Native latitude of celestial pole
MJDREF = 0.0 / [d] MJD of fiducial time
RADESYS = 'ICRS' / Equatorial coordinate system
FILETIME = '2025-08-21 16:40:58'
SURVEY = 'hdr5'
MASK = 'True'
CONVOLVE = 'False'
INTERP = 'linear'
FFSKY = 'False'
FFSKYRC = 'False'
SHOTID = 20210506021
FIELD = 'nep'
OBJID = 'NEP_row4_fld13d'
DATE = 20210506
OBSID = 21
RA = 266.157869
DEC = 67.05852
PA = 1.707868
N_IFU = 70
FWHM = 2.568694
FWHM_ERR = 0.53385544
RESPONSE = 0.13
RELFLUX1 = 0.9162612
RELFLUX2 = 0.98028713
RELFLUX3 = 1.0908942
AMBTEMP = 17.817778
DATEVOBS = '20210506v021'
DEWPOINT = 3.3905556
EXPNUM1 = 1
EXPNUM2 = 2
EXPNUM3 = 3
EXPTIME1 = 487.0985
EXPTIME2 = 487.77466
EXPTIME3 = 488.22488
HUMIDITY = 33.706
MJD1 = 59340.375
MJD2 = 59340.383
MJD3 = 59340.387
OBSIND = 1
PRESSURE = 805.7911
STRUCTAZ = 0.016224
TIME = '0859580'
TRAJCDEC = 67.05817
TRAJCPA = 0.033785
TRAJCRA = 266.15732
BUNIT = '1e-17 erg s^-1 cm^-2'
SPECBW = 2.0
EXTNAME = 'DATA' / extension name
CHECKSUM = 'Em9dGk9cEk9cEk9c' / HDU checksum updated 2026-03-05T18:22:57
DATASUM = '2111919214' / data unit checksum updated 2026-03-05T18:22:57
ZHECKSUM = 'DWjbETjZDTjaDTjY' / HDU checksum updated 2026-03-05T18:22:56
ZDATASUM = '178728099' / data unit checksum updated 2026-03-05T18:22:56
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 = 9224764 / 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(16958)' / data format of field: variable length array
TTYPE2 = 'GZIP_COMPRESSED_DATA' / label for field 2
TFORM2 = '1PB(51)' / 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 = -0.056829888674124 / Coordinate transformation matrix element
PC1_2 = -0.99838387594817 / Coordinate transformation matrix element
PC2_1 = 0.99838387594817 / Coordinate transformation matrix element
PC2_2 = -0.056829888674124 / 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 = 266.0559387207 / [deg] Coordinate value at reference point
CRVAL2 = 67.129455566406 / [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 = 67.129455566406 / [deg] Native latitude of celestial pole
MJDREF = 0.0 / [d] MJD of fiducial time
RADESYS = 'ICRS' / Equatorial coordinate system
FILETIME = '2025-08-21 16:40:58'
SURVEY = 'hdr5'
MASK = 'True'
CONVOLVE = 'False'
INTERP = 'linear'
FFSKY = 'False'
FFSKYRC = 'False'
SHOTID = 20210506021
FIELD = 'nep'
OBJID = 'NEP_row4_fld13d'
DATE = 20210506
OBSID = 21
RA = 266.157869
DEC = 67.05852
PA = 1.707868
N_IFU = 70
FWHM = 2.568694
FWHM_ERR = 0.53385544
RESPONSE = 0.13
RELFLUX1 = 0.9162612
RELFLUX2 = 0.98028713
RELFLUX3 = 1.0908942
AMBTEMP = 17.817778
DATEVOBS = '20210506v021'
DEWPOINT = 3.3905556
EXPNUM1 = 1
EXPNUM2 = 2
EXPNUM3 = 3
EXPTIME1 = 487.0985
EXPTIME2 = 487.77466
EXPTIME3 = 488.22488
HUMIDITY = 33.706
MJD1 = 59340.375
MJD2 = 59340.383
MJD3 = 59340.387
OBSIND = 1
PRESSURE = 805.7911
STRUCTAZ = 0.016224
TIME = '0859580'
TRAJCDEC = 67.05817
TRAJCPA = 0.033785
TRAJCRA = 266.15732
BUNIT = '1e-17 erg s^-1 cm^-2'
SPECBW = 2.0
EXTNAME = 'ERROR' / extension name
CHECKSUM = 'iAgej7eZiAedi7eZ' / HDU checksum updated 2026-03-05T18:22:57
DATASUM = '591583183' / data unit checksum updated 2026-03-05T18:22:57
ZHECKSUM = '5VlA8Si85SiA5Si5' / HDU checksum updated 2026-03-05T18:22:57
ZDATASUM = '4070683298' / data unit checksum updated 2026-03-05T18:22:57
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 = 1510596 / 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(8930)' / 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 = -0.056829888674124 / Coordinate transformation matrix element
PC1_2 = -0.99838387594817 / Coordinate transformation matrix element
PC2_1 = 0.99838387594817 / Coordinate transformation matrix element
PC2_2 = -0.056829888674124 / 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 = 266.0559387207 / [deg] Coordinate value at reference point
CRVAL2 = 67.129455566406 / [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 = 67.129455566406 / [deg] Native latitude of celestial pole
MJDREF = 0.0 / [d] MJD of fiducial time
RADESYS = 'ICRS' / Equatorial coordinate system
FILETIME = '2025-08-21 16:40:58'
SURVEY = 'hdr5'
MASK = 'True'
CONVOLVE = 'False'
INTERP = 'linear'
FFSKY = 'False'
FFSKYRC = 'False'
SHOTID = 20210506021
FIELD = 'nep'
OBJID = 'NEP_row4_fld13d'
DATE = 20210506
OBSID = 21
RA = 266.157869
DEC = 67.05852
PA = 1.707868
N_IFU = 70
FWHM = 2.568694
FWHM_ERR = 0.53385544
RESPONSE = 0.13
RELFLUX1 = 0.9162612
RELFLUX2 = 0.98028713
RELFLUX3 = 1.0908942
AMBTEMP = 17.817778
DATEVOBS = '20210506v021'
DEWPOINT = 3.3905556
EXPNUM1 = 1
EXPNUM2 = 2
EXPNUM3 = 3
EXPTIME1 = 487.0985
EXPTIME2 = 487.77466
EXPTIME3 = 488.22488
HUMIDITY = 33.706
MJD1 = 59340.375
MJD2 = 59340.383
MJD3 = 59340.387
OBSIND = 1
PRESSURE = 805.7911
STRUCTAZ = 0.016224
TIME = '0859580'
TRAJCDEC = 67.05817
TRAJCPA = 0.033785
TRAJCRA = 266.15732
SPECBW = 2.0
EXTNAME = 'MASK' / extension name
CHECKSUM = 'M127P017M017M017' / HDU checksum updated 2026-03-05T18:22:58
DATASUM = '827486142' / data unit checksum updated 2026-03-05T18:22:58
ZHECKSUM = 'WGABZ959WEAAW937' / HDU checksum updated 2026-03-05T18:22:58
ZDATASUM = '343047083' / data unit checksum updated 2026-03-05T18:22:58