Here is my stab at NGC253. From Sunday just gone. I'm still wrestling with tracking performance but have made the jump to 10 second Subs, although DSS would not stack so I used Sequator. I lost patience in attempting to centre( it was getting late) so will improve on this aspect next time!! Curves in GIMP with some colour emhancement and contrast tweeks. Contidions were Bortel 5 skies clea and 12 degrees . Post Edits.I didn't want to darken too much as contrast detail was lost so this rendition will suffer somewhat
How far do you go?? Spec. 230 lights 2 darks Total intergration of 38 minutes .~ 20" F5. "Zamar"
Camera Olympus E-pm2 at Newtonian Focus.