Originally Posted by
aatt
This is my first post here. I was just reading David Kriege's Dob book and one thing leaped off of the page where he said that a 12" will show you just as much as a 25" in typical suburban LP conditions. I have a 15" which, judging for some of the sigs here, makes me a tiny fish in the scope pond. I live in orange/red skies and have been thinking about going to a 20" which seems to be the limit of what I want to handle. I know I am not a ladder guy, but a step stool I can deal with. In all honesty, what are your thoughts about moving up to that aperture in those conditions? Is it worth it? I do know that definitively detecting Abell 262 members ( 732, 759 753 and 712 less so) are a challenge to me with my 15" scope, eyes,age, experience and lp levels. Would those be unambiguous in a 20" (and show detail)? I would think they would, but I have never looked through a 20" before.