This makes the healpixed sky maps and bricked sky maps work with the same code. (But demands that a skybricks-exist.fits file is generated for the healpixes.)
expect SKYBRAD (brick radius) in header of skybricks-exist.fits
if SKYHPNS (nside) exists, and skybricks-exist.fits contains a HEALPIX column, assume healpixed files
Verified that this produces the same results as skyhealpixs.py
This makes the healpixed sky maps and bricked sky maps work with the same code. (But demands that a skybricks-exist.fits file is generated for the healpixes.)
Verified that this produces the same results as skyhealpixs.py