M83 data from Martin Pugh, processing by yours truly. Might still need a bit of tweaking. Feel free to offer frank opinions
Scope: Planewave CDK17 @ f/6.8 = 2939mm FL
Mount: Paramount ME
Camera: SBIG STXL-11002/AOX
Filters: Astrodon LRGB gen II, 3nm NB
Image scale: 0.63 arcsec/pixel
Exposures: 14x1200s R, 13x1200s G, 15x1200s B, 21x1200s L, 5x1800s x2 Ha (23.5 hours)
Processing: PixInsight 1.8.5
Big version on Astrobin:
https://www.astrobin.com/full/351189/0/
Cheers,
Rick.