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Yes, those calcs are pretty close Jason (LB 10" focal length is 1270mm).
My strategy was to use the 20mm Nagler and a Pan 35mm, but the 7mm exit pupil on the Pan 35 was too much for my ageing eyes to handle. (Was very impressed that the guys at Bintel allowed me exchange for a Pan 27 after I got to test the 35.)
The Nagler 20mm gives excellent viewing, but is larger than I expected and the actual FOV (1.3 degrees in my scope) is too close to the Pan 27mm (1.4 degrees in my scope).
Last edited by Jeff; 23-04-2008 at 10:05 PM.
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