astropy/astropy — pull request #2093 by larrybradley (2014-02-14 17:22:47+00:00)
Title: fixed AiryDisk2D model

Fixes the ``AiryDisk2D`` model (the factor of 2 goes outside of the Bessel function) and changes the input parameter from ``width`` to ``radius``, which I've defined as the radius of Airy disk (the radius of the first zero), which represents the limiting angular resolution.