For astrophotographers who use Photoshop, here's some interesting and some good news. A just-released plug-in called APF-R (Absolute Point of Focus) can do wonders for your images. Astrophotographer Christoph Kaltseis has developed APF-R in order to achieve high-resolution, ultra-sharp images that still look natural. As astro-imagers know, trying to sharpen point sources like stars can result in ugly halos and other unwanted artifacts.
[ Read More ](Originally posted by Mel Martin)