[AlexN]

Originally Posted by strongmanmike

...ok, done with an almost wide angled 1140mm FL and just a few 10min exposures :

http://www.pbase.com/strongmanmike20...71681/original

and just to prove the point - even closer:

http://www.pbase.com/strongmanmike20...25889/original

/Snip!

Mate, not bad... However a 6" AP refractor is not a sissy toy

Oh, and imagine what that would look like if that was not a crop, but full frame of the KAF0900 sensor, or your KAI11002...? Obviously the seeing require to capture an image like that would greatly exceed what we could ever expect on earth.. BUT, IF we could, longer focal length would produce a better image...

Also - something like the C11 would get beaten by a 6" triplet APO, but exchange the C11 for a 12.5~17" RC or CDK and you're looking at a big big contest for the better image I personally look forward to Greg Bradley doing a direct comparision between his TEC180FL and TAK BRC-250... My money says the big mirror wins (only because I want the mirror to win! )