This is a work in progress on M104, using the Sharpstar 107PH and the ZWO ASI1600MM-C at -15C, Gain 77, Offset 13.
This is one night's data. 33 x 2 min RGB, 103 x 1 min L. Assuming I can get some clear skies, I'd like pile on a lot more L data. I think I've got enough RGB data, so getting a few more hours of L would be good.
Wide view with some bright stars:
Annotated, showing lots of PGCs:
Closeup of M104:
If you want to see larger images with less compression applied, they're on my G+ account:
https://plus.google.com/+ChrisRyan_Oz/posts/QqUixgJvJhL
Feedback, comments, etc welcome.