sunpy/sunpy — pull request #108 by ehsteve (2011-11-29 22:42:31+00:00)
Title: Enabling rotation and wcs bug fix.

In order to fix a bug had to replace use of arctan, which only returns angles between -90 to 90) with arctan2, goes from -180, 180). Also had to create a new function to pass the z coordinate to enable euler rotations of the Sun.