astropy/astropy — pull request #2730 by astrofrog (2014-07-11 22:34:18+00:00)
Title: Implementation of wcs_to_celestial_frame

This is an alternative to https://github.com/astropy/astropy/pull/2681 and uses a function-based implementation. We still need to figure out how to make this extensible, but it is a lot cleaner for dealing with the defaults, etc. so far for FITS-WCS.