Astrometry.net 0.44: new formula for Astrometry.net code

Astrometry.net is a package for automatically recognizing astronomical
images (aka doing "plate solves" or "astrometric calibration"); you
give us an image of the night sky, we tell you where your camera or
telescope was pointing.


I am one of the authors of the Astrometry.net code.  I know self-submissions are frowned upon, but it is a real package used by lots of people, and homebrew makes it easy to distribute to our mac users.  We have been using this formula in our fork of homebrew-science, https://github.com/camphogg/homebrew-science/blob/master/astrometry.net.rb for several months.