Hi Hans,
Interesting to read that it is a 5" f/12 "APO". Most APO's seem to be significantly shorter focal length, say F7-F9. The combination of F12 and "APO" would be really good in terms of chromatic aberrations, despite the limitations in terms of imaging. Can you say what the scope is? An early AP
Super Planetary? Three lens objective? John
Quote:
Originally Posted by Hans Tucker
Sorry, I should have been more specific. Yes, I am questioning if you can image Deep Sky with a long focal length. I would think that for planetary I could use the f/12 to an advantage. The scope is a 5" f/12 APO refractor. I do have the AP 0.67X Reducer so I can go from f/12 to f/8.
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