Provided by: astrometry.net_0.75+dfsg-1_amd64
get-healpix - Convert RA,DEC to Which healpix
get-healpix [options] ra dec get-healpix [options] x y z
-r RA/DEC values in radians; default is in decimal degrees or H:M:S -H healpix take healpix number as input and print center as output. -N n Nside (default 1) -n Print neighbours -R range print healpixes within radius range in degrees -p Project position within healpix If your values are negative, add "--" in between "-r" (if you're using it) and "ra" or "x".
The Astrometry.net team. Principal investigators are David W. Hogg (NYU) and Dustin Lang (CMU).