Here's 5 hours of 5 minute LRGB subs (24:12:12:12) on M83 from last night. For years I've had a black and white print of M83 that I bought when visiting Siding Springs in the early 80s, and it's interesting to compare the quality of a glass plate and 150" with a 10" newtonian.
Anyway, I'm quite pleased with this, and will now start obsessing about how to get rid of the white cores in the stars, and hope we get a night without smoke so the blue haloes aren't quite so bad!
Processing was drizzle integration, with a very mild decon on the luminance, a bit of stretching, colour calibration using Excalibrator and all mixed up again in Pixinsight.
Camera was a QSIwsg683, Scope was a Meade 10"f4.5 starfinder with an ASA 1.8x Barlow/flattener, all looking quite small compared to the ASA DDM85 they are sitting on.
Comments most welcome, as well as suggestions on how to tame the stars!
Full res version at astrobin:
http://www.astrobin.com/289574/
cheers!
Andrew.