--- header unit 0: primary ---
SIMPLE = T / file does conform to FITS standard
BITPIX = 8 / Bit depth of image
NAXIS = 0 / number of data axes
EXTEND = T / FITS dataset may contain extensions
COMMENT FITS (Flexible Image Transport System) format is defined in 'Astronomy
COMMENT and Astrophysics', volume 376, page 359; bibcode: 2001A&A...376..359H
TELESCOP = 'FOXSI' / Name of source telescope package
INSTRUME = 'SAAS' / Name of instrument
ORIGIN = 'FOXSI/SAAS SBC' / Location where file was made
WAVELNTH = 6320 / Wavelength of observation (ang)
WAVE_STR = '632 Nm' / Wavelength of observation string
BZERO = 128 / Bit depth of image
BSCALE = 1. / Bit depth of image
WAVEUNIT = 'angstrom' / Units of WAVELNTH
PIXLUNIT = 'DN' / Pixel units
IMG_TYPE = 'LIGHT' / Image type
RSUN_REF = 696000000.
CTLMODE = 'LIGHT' / Image type
LVL_NUM = 0 / Level of data
RSUN_OBS = 0.
CTYPE1 = 'HPLN-TAN' / A string value labeling each coordinate axis
CTYPE2 = 'HPLN-TAN' / A string value labeling each coordinate axis
CUNIT1 = 'arcsec' / Coordinate Units
CUNIT2 = 'arcsec' / Coordinate Units
CRVAL1 = 0. / Coordinate value of the reference pixel
CRVAL2 = 0. / Coordinate value of the reference pixel
CDELT1 = 3.47000002861023 / Plate scale
CDELT2 = 3.47000002861023 / Plate scale
CRPIX1 = 0. / Reference pixel
CRPIX2 = 0. / Reference pixel
EXPTIME = 0.003 / Exposure time in seconds
DATE_OBS = 'Thu May 29 22:53:29 2025' / Date and time when observation of this i
TEMPCCD = 33. / Temperature of camera in Celsius
FILENAME = 'images/84/FOXSI_SAAS_20250529_225329_653.fits' / Name of the data fil
CAMERAID = 0 / Serial Number of camera
EXPOSURE = 3000 / Exposure time in usec
GAIN_PRE = -3. / Preamp gain of CCD
GAIN_ANA = 400 / Analog gain of CCD
FRAMENUM = 18835 / Frame number
HIERARCH CROSSHAIR_X = 535 / Crosshair x coordinate
HIERARCH CROSSHAIR_Y = 379 / Crosshair y coordinate
--- header unit 1: binary table ---
XTENSION = 'BINTABLE' / binary table extension
BITPIX = 8 / 8-bit bytes
NAXIS = 2 / 2-dimensional binary table
NAXIS1 = 8 / width of table in bytes
NAXIS2 = 966 / number of rows in table
PCOUNT = 18448 / size of special data area
GCOUNT = 1 / one data group (required keyword)
TFIELDS = 1 / number of fields in each row
TTYPE1 = 'COMPRESSED_DATA' / label for field 1
TFORM1 = '1PB(34)' / data format of field: variable length array
ZIMAGE = T / extension contains compressed image
ZBITPIX = 8 / data type of original image
ZNAXIS = 2 / dimension of original image
ZNAXIS1 = 1296 / length of original image axis
ZNAXIS2 = 966 / length of original image axis
ZTILE1 = 1296 / size of tiles to be compressed
ZTILE2 = 1 / 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 = 1 / bytes per pixel (1, 2, 4, or 8)
EXTNAME = 'Raw Frame'
HDUVERS = 1