XTENSION= 'BINTABLE'           / binary table extension
BITPIX  =                    8 / array data type
NAXIS   =                    2 / number of array dimensions
NAXIS1  =                 4096 / length of dimension 1
NAXIS2  =                49152 / length of dimension 2
PCOUNT  =                    0 / number of group parameters
GCOUNT  =                    1 / number of groups
TFIELDS =                    1 / number of table fields
TTYPE1  = 'I       '
TFORM1  = '1024E   '
PIXTYPE = 'HEALPIX '           / HEALPIX pixelisation
ORDERING= 'RING    '           / Pixel ordering scheme, either RING or NESTED
EXTNAME = 'xtension'           / name of this binary table extension
NSIDE   =                 2048 / Resolution parameter of HEALPIX
FIRSTPIX=                    0 / First pixel # (0 based)
LASTPIX =             50331647 / Last pixel # (0 based)
INDXSCHM= 'IMPLICIT'           / Indexing: IMPLICIT or EXPLICIT
