--- header unit 0: primary ---
SIMPLE = T / file does conform to FITS standard
BITPIX = -64 / number of bits per data pixel
NAXIS = 1 / number of data axes
NAXIS1 = 786432 / length of data axis 1
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
EXTNAME = 'PIXWEIGHTS'
DEPNAM00 = 'desimodel'
DEPVER00 = '0.9.4.dev367'
PRECISE = 0.01
HPXNSIDE = 256
HPXNEST = T