Messier 78
This is a rescued image from February 2022. I was still finding my way with CMOS imaging back then and I think I badly underexposed the subexposures here.
PixInsight didn’t give me anything useable but I ran the 90 x 3 minute subs through ASI deep stack tonight and came out with something.
My most successful run at this target was taken remotely with a very fast scope in Colorado here:
Certainly the background stars are a great colour and not over-exposed but I’m not sure if 3 minutes exposure (gain 100, offset 50) is the right option for a f/6-7 system - it's commonly mentioned on imaging fora but people tend not to specify their f-stop!
Update - I'm using 5 minutes, Gain 100, Offset 25 as a standard now.
Messier 78
This is a rescued image from February 2022. I was still finding my way with CMOS imaging back then and I think I badly underexposed the subexposures here.
PixInsight didn’t give me anything useable but I ran the 90 x 3 minute subs through ASI deep stack tonight and came out with something.
My most successful run at this target was taken remotely with a very fast scope in Colorado here:
Certainly the background stars are a great colour and not over-exposed but I’m not sure if 3 minutes exposure (gain 100, offset 50) is the right option for a f/6-7 system - it's commonly mentioned on imaging fora but people tend not to specify their f-stop!
Update - I'm using 5 minutes, Gain 100, Offset 25 as a standard now.