M63

I went for a reasonably long exposure (15.5 hours) mainly since this length of time appears to get optimal results.

The image is a Red blend of Ha using PS Screen Blending, I did try the Lighten blending method but preferred the result with Screen. The Luminescence (L) layer was deconvoluted in CCDstack and then further sharpened with Smartsharpen and a High Pass Filter. The RGB layer was blended into the L layer after a linear stretch with Levels. Shadows/Highlights was then applied to the RGB layer before the image was combined into an LRGB.  LAB colour applied to a and b channels and finally a gentle boost of Vibrance. The starfield was processed separately since some of the stars where getting too big, I also spent quite a long time correcting the star field for Chromatic Aberration errors.