This is my "first light" with my new ASI183MM Pro and my first time trying to capture this target. I'd actually forgotten about it, though I'd seen it numerous times (Mike did one of the best ones I've seen back in 2012 for example).
Seeing has been poor and I don't seem to be getting as much light as I calculated that I should (a mere 0.125e/pixel/s in the background for L) so I'm not sure what's going on there, maybe my mirror coatings are buggered... all in all, this one was a challenge.
I'm usually not at all good at bringing out the faint stuff but I think I did pretty well in that regard this time.
I had planned on getting more data on this one, but got carried away with a preliminary process and now I've decided it's done. All up I got just over 21hrs. Maybe I'll get some more data another year.
More capture details
here
Large version
here
Full version
here