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Focal length question

Started by vct, 12/19/2009 09:21PM
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Posted 12/19/2009 09:21PM Opening Post
victor truglio
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Can someone help me with the focal length of a new scope.
I just picked up a 12.5' f6 Discovery split-tube.
I cant find any listings from Discovery for an f6 only f5
I calculate around 1875fl
Sound right??
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Posted 12/19/2009 09:44PM #1
Alan French
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12.5" x (25.4mm/") x 6 = 1905mm

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Posted 12/19/2009 09:47PM #2
Jon Isaacs
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victor truglio said:

Can someone help me with the focal length of a new scope.
I just picked up a 12.5' f6 Discovery split-tube.
I cant find any listings from Discovery for an f6 only f5
I calculate around 1875fl
Sound right??

12.5 in x 6 =75 inches or as Alan says, 1905mm. How long is the OTA? It should be about 6 feet long when all is said and done.

Jon
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