Pow!
That'pretty good SNR for under 1 hour.
Lots of faint dust there, Well done!
Am I right in saying your system is sampling at around 2.2"/pixel? You should try Pixinisght's drizzle integration tool. Its works great on under sampled images. It even has a Bayer Drizzle function for OSC and our DSLR's.
Details here
x2 Drizzle example here
Not a huge necessity though, your image has a lot of impact already.
Cheers
Rod