Planewave's PS2 is free and comes with SGP. it's really fast. as a backup you can use astrometry.net online, or install astrotortilla and then use the ANSVR package to run a local astrometry server that SGP can fall back to if PS2 fails.
rob
Planewave's PS2 is free and comes with SGP. it's really fast. as a backup you can use astrometry.net online, or install astrotortilla and then use the ANSVR package to run a local astrometry server that SGP can fall back to if PS2 fails.
rob