Quote:
Originally Posted by johnt
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
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It is an Apomax 130mm f/12, with a 3-element objective built by Fred Mrozek. I believe only around 23 were made. My scope is the attached image but here is a review from CN.
http://www.cloudynights.com/item.php?item_id=897