M27, The Dumbbell Nebula, Reprocessed

I downloaded a new image processing app called Nebulosity, which offers more control for stacking, aligning and processing than Keith's Image Stacker. Mostly I was looking for a way to de-rotate an image stack. It's not a perfect program--the sequence of steps required is a little vague--but I'm happy with the early results.

Here's September's shot of M27 processed in KIS and Nebulosity.

Before:


After: