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200" Refractor
Forum List | Follow Ups | Post Message | Back to Thread Topics | In Response To Posted by Robert May on August 26, 2001 20:00:05 UTC |
The scope is an approximatly 200" FL refractor of approx. 4.25" aperture. I usually consider it to be a F45 as the two pieces of glass used to make the singlet objective are F90 (the two pieces of planoconvex BK7 are glued together back to back) so it's about F45.
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