--- header unit 0: primary ---
SIMPLE = T / conforms to FITS standard
BITPIX = 8 / array data type
NAXIS = 0 / number of array dimensions
EXTEND = T
CHECKSUM = 'C6gFC4Z9C4dEC4Z9' / HDU checksum updated 2026-03-05T16:54:03
DATASUM = '0' / data unit checksum updated 2026-03-05T16:54:03
--- 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 = 8790499 / 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(13940)' / data format of field: variable length array
TTYPE2 = 'GZIP_COMPRESSED_DATA' / label for field 2
TFORM2 = '1PB(96)' / 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 = -0.44588601979888 / Coordinate transformation matrix element
PC1_2 = 0.89508974820848 / Coordinate transformation matrix element
PC2_1 = -0.89508974820848 / Coordinate transformation matrix element
PC2_2 = -0.44588601979888 / 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 = 35.680694580078 / [deg] Coordinate value at reference point
CRVAL2 = 0.72081798315048 / [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 = 0.72081798315048 / [deg] Native latitude of celestial pole
MJDREF = 0.0 / [d] MJD of fiducial time
RADESYS = 'ICRS' / Equatorial coordinate system
FILETIME = '2025-08-21 07:03:40'
SURVEY = 'hdr5'
MASK = 'True'
CONVOLVE = 'False'
INTERP = 'linear'
FFSKY = 'False'
FFSKYRC = 'False'
SHOTID = 20190928018
FIELD = 'dex-fall'
OBJID = 'DEXfl3304'
DATE = 20190928
OBSID = 18
RA = 35.746846
DEC = 0.803103
PA = 151.96996
N_IFU = 55
FWHM = 1.6548083
FWHM_ERR = 0.28742385
RESPONSE = 0.1302
RELFLUX1 = 0.9458889
RELFLUX2 = 1.0989296
RELFLUX3 = 0.9536798
AMBTEMP = 19.735
DATEVOBS = '20190928v018'
DEWPOINT = 12.919444
EXPNUM1 = 1
EXPNUM2 = 2
EXPNUM3 = 3
EXPTIME1 = 367.64978
EXPTIME2 = 367.45715
EXPTIME3 = 367.2743
HUMIDITY = 62.886
MJD1 = 58754.31
MJD2 = 58754.316
MJD3 = 58754.32
OBSIND = 1
PRESSURE = 799.4585
STRUCTAZ = 145.15254
TIME = '0726572'
TRAJCDEC = 0.802744
TRAJCPA = 150.56387
TRAJCRA = 35.747623
BUNIT = '1e-17 erg s^-1 cm^-2'
SPECBW = 2.0
EXTNAME = 'DATA' / extension name
CHECKSUM = 'CAaVF2VSC9aSC9US' / HDU checksum updated 2026-03-05T16:54:04
DATASUM = '1794397833' / data unit checksum updated 2026-03-05T16:54:04
ZHECKSUM = 'FRLlHPJjFPJjFPJj' / HDU checksum updated 2026-03-05T16:54:04
ZDATASUM = '1195899571' / data unit checksum updated 2026-03-05T16:54:04
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 = 9141093 / 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(16830)' / data format of field: variable length array
TTYPE2 = 'GZIP_COMPRESSED_DATA' / label for field 2
TFORM2 = '1PB(96)' / 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 = -0.44588601979888 / Coordinate transformation matrix element
PC1_2 = 0.89508974820848 / Coordinate transformation matrix element
PC2_1 = -0.89508974820848 / Coordinate transformation matrix element
PC2_2 = -0.44588601979888 / 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 = 35.680694580078 / [deg] Coordinate value at reference point
CRVAL2 = 0.72081798315048 / [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 = 0.72081798315048 / [deg] Native latitude of celestial pole
MJDREF = 0.0 / [d] MJD of fiducial time
RADESYS = 'ICRS' / Equatorial coordinate system
FILETIME = '2025-08-21 07:03:40'
SURVEY = 'hdr5'
MASK = 'True'
CONVOLVE = 'False'
INTERP = 'linear'
FFSKY = 'False'
FFSKYRC = 'False'
SHOTID = 20190928018
FIELD = 'dex-fall'
OBJID = 'DEXfl3304'
DATE = 20190928
OBSID = 18
RA = 35.746846
DEC = 0.803103
PA = 151.96996
N_IFU = 55
FWHM = 1.6548083
FWHM_ERR = 0.28742385
RESPONSE = 0.1302
RELFLUX1 = 0.9458889
RELFLUX2 = 1.0989296
RELFLUX3 = 0.9536798
AMBTEMP = 19.735
DATEVOBS = '20190928v018'
DEWPOINT = 12.919444
EXPNUM1 = 1
EXPNUM2 = 2
EXPNUM3 = 3
EXPTIME1 = 367.64978
EXPTIME2 = 367.45715
EXPTIME3 = 367.2743
HUMIDITY = 62.886
MJD1 = 58754.31
MJD2 = 58754.316
MJD3 = 58754.32
OBSIND = 1
PRESSURE = 799.4585
STRUCTAZ = 145.15254
TIME = '0726572'
TRAJCDEC = 0.802744
TRAJCPA = 150.56387
TRAJCRA = 35.747623
BUNIT = '1e-17 erg s^-1 cm^-2'
SPECBW = 2.0
EXTNAME = 'ERROR' / extension name
CHECKSUM = 'oeg3ocg1ocg1ocg1' / HDU checksum updated 2026-03-05T16:54:05
DATASUM = '97976785' / data unit checksum updated 2026-03-05T16:54:05
ZHECKSUM = '9GObC9LZ9ELbC9LZ' / HDU checksum updated 2026-03-05T16:54:05
ZDATASUM = '1950817956' / data unit checksum updated 2026-03-05T16:54:05
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 = 493847 / 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(6150)' / 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 = -0.44588601979888 / Coordinate transformation matrix element
PC1_2 = 0.89508974820848 / Coordinate transformation matrix element
PC2_1 = -0.89508974820848 / Coordinate transformation matrix element
PC2_2 = -0.44588601979888 / 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 = 35.680694580078 / [deg] Coordinate value at reference point
CRVAL2 = 0.72081798315048 / [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 = 0.72081798315048 / [deg] Native latitude of celestial pole
MJDREF = 0.0 / [d] MJD of fiducial time
RADESYS = 'ICRS' / Equatorial coordinate system
FILETIME = '2025-08-21 07:03:40'
SURVEY = 'hdr5'
MASK = 'True'
CONVOLVE = 'False'
INTERP = 'linear'
FFSKY = 'False'
FFSKYRC = 'False'
SHOTID = 20190928018
FIELD = 'dex-fall'
OBJID = 'DEXfl3304'
DATE = 20190928
OBSID = 18
RA = 35.746846
DEC = 0.803103
PA = 151.96996
N_IFU = 55
FWHM = 1.6548083
FWHM_ERR = 0.28742385
RESPONSE = 0.1302
RELFLUX1 = 0.9458889
RELFLUX2 = 1.0989296
RELFLUX3 = 0.9536798
AMBTEMP = 19.735
DATEVOBS = '20190928v018'
DEWPOINT = 12.919444
EXPNUM1 = 1
EXPNUM2 = 2
EXPNUM3 = 3
EXPTIME1 = 367.64978
EXPTIME2 = 367.45715
EXPTIME3 = 367.2743
HUMIDITY = 62.886
MJD1 = 58754.31
MJD2 = 58754.316
MJD3 = 58754.32
OBSIND = 1
PRESSURE = 799.4585
STRUCTAZ = 145.15254
TIME = '0726572'
TRAJCDEC = 0.802744
TRAJCPA = 150.56387
TRAJCRA = 35.747623
SPECBW = 2.0
EXTNAME = 'MASK' / extension name
CHECKSUM = 'gKYTjJYTgJYTgJYT' / HDU checksum updated 2026-03-05T16:54:05
DATASUM = '479175329' / data unit checksum updated 2026-03-05T16:54:05
ZHECKSUM = 'P7JTR5JQP5JQP5JQ' / HDU checksum updated 2026-03-05T16:54:05
ZDATASUM = '1549475557' / data unit checksum updated 2026-03-05T16:54:05