--- header unit 0: primary ---
SIMPLE = T / conforms to FITS standard
BITPIX = 8 / array data type
NAXIS = 0 / number of array dimensions
COMMENT FITS (Flexible Image Transport System) format is defined in 'Astronomy
COMMENT and Astrophysics', volume 376, page 359; bibcode: 2001A&A...376..359H
EXTNAME = 'PRIMARY'
WCSAXES = 2 / no comment
CTYPE1 = 'RA---TAN' / TAN (gnomic) projection
CTYPE2 = 'DEC--TAN' / TAN (gnomic) projection
EQUINOX = 2000. / Equatorial coordinates definition (yr)
LONPOLE = 180. / no comment
LATPOLE = 0. / no comment
CRVAL1 = 23.076901 / RA of reference point
CRVAL2 = -10.601111 / DEC of reference point
CRPIX1 = 1024.5 / X reference pixel
CRPIX2 = 1024.5 / Y reference pixel
CUNIT1 = 'deg' / X pixel scale units
CUNIT2 = 'deg' / Y pixel scale units
CD1_1 = -0.000763888888889 / Transformation matrix
CD1_2 = 0 / no comment
CD2_1 = 0 / no comment
CD2_2 = 0.000763888888889 / no comment
IMAGEW = 2048 / Image width, in pixels.
IMAGEH = 2048 / Image height, in pixels.
MAGZP = 22.5 / Magnitude zeropoint (in Vega mag)
UNW_SKY = -1.55116874022293 / Background value subtracted from coadd img
UNW_VER = 'v3.5-22-g76dafcc' / unWISE code git revision
UNW_URL = 'https://github.com/dstndstn/unwise-coadds' / git URL
UNW_DVER = 3.3 / unWISE data model version
UNW_DATE = '2018-05-07T14:28:28.244271' / unWISE run time
UNW_FR0 = 0 / unWISE frame start
UNW_FRN = 0 / unWISE N frames
UNW_MEDF = 0 / unWISE median filter sz
UNW_BGMA = F / unWISE background matching?
REFEREN1 = '' / reference coadd directory
REFEREN2 = '' / reference coadd directory, continued
EPOCH = -1 / epoch number
MJDMIN = 55203.18386448 / minimum MJD among included L1b frames
MJDMAX = 57944.31342774 / maximum MJD among included L1b frames
--- header unit 1: binary table ---
XTENSION = 'BINTABLE' / binary table extension
BITPIX = 8 / array data type
NAXIS = 2 / number of array dimensions
NAXIS1 = 262 / length of dimension 1
NAXIS2 = 72794 / length of dimension 2
PCOUNT = 0 / number of group parameters
GCOUNT = 1 / number of groups
TFIELDS = 27 / number of table fields
TTYPE1 = 'x'
TFORM1 = '2D'
TTYPE2 = 'y'
TFORM2 = '2D'
TTYPE3 = 'flux'
TFORM3 = '2E'
TTYPE4 = 'dx'
TFORM4 = '2E'
TTYPE5 = 'dy'
TFORM5 = '2E'
TTYPE6 = 'dflux'
TFORM6 = '2E'
TTYPE7 = 'qf'
TFORM7 = '2E'
TTYPE8 = 'rchi2'
TFORM8 = '2E'
TTYPE9 = 'fracflux'
TFORM9 = '2E'
TTYPE10 = 'fluxlbs'
TFORM10 = '2E'
TTYPE11 = 'dfluxlbs'
TFORM11 = '2E'
TTYPE12 = 'fwhm'
TFORM12 = '2E'
TTYPE13 = 'spread_model'
TFORM13 = '2E'
TTYPE14 = 'dspread_model'
TFORM14 = '2E'
TTYPE15 = 'sky'
TFORM15 = '2E'
TTYPE16 = 'ra12'
TFORM16 = '2D'
TTYPE17 = 'dec12'
TFORM17 = '2D'
TTYPE18 = 'coadd_id'
TFORM18 = '8A'
TTYPE19 = 'unwise_detid'
TFORM19 = '36A'
TDIM19 = '(18,2)'
TTYPE20 = 'nm'
TFORM20 = '2I'
TTYPE21 = 'primary12'
TFORM21 = '2I'
TTYPE22 = 'flags_unwise'
TFORM22 = '2I'
TTYPE23 = 'flags_info'
TFORM23 = '2I'
TTYPE24 = 'ra'
TFORM24 = 'D'
TTYPE25 = 'dec'
TFORM25 = 'D'
TTYPE26 = 'primary'
TFORM26 = 'I'
TTYPE27 = 'unwise_objid'
TFORM27 = '16A'