M33 HaLRGB

[rdryfoos]

This target is a tricky beast to process.  I inevitably end up crossing an invisible, very thin line at some point and end up with a mess.  This is my best effort to date
TOA 130 and STT 8300
red:     31 10 min
Green: 31 10 min
Blue:    19 10 min
Lum:    31 20 min
Ha: 10 30 min

[rdryfoos]

I improved the image--I think this one is pretty decent--sharp with depth.  Individual stars in the disc and spiral arms can be seen.  Quite tricky.  Processing tis was like having 7 chimpanzees typing randomly, sooner or later (much later probably) they will pound out the complete works of Shakespeare with no errors.   

https://www.astrobin.com/316865/DS/?nc=