New answers tagged software
This type of software is called plate-solving software. There are several other software other than astrometry.net that can achieve this as well. http://pinpoint.dc3.com/ http://www.astrosurf.com/pulgar/elbrus/elbrusin.htm To name a few
Have you tried nova.astrometry.net? They set up a web service for doing more or less what you're talking about.
Top 50 recent answers are included