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Old 17-04-2007, 10:31 AM
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janoskiss (Steve H)
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Join Date: Jan 2005
Location: Sale, VIC
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Quote:
Do you know how i can calculate the actual focal length of the scope with a 2 inch diagonal. Also i am thinking of a Crayford focuser which may slow it even more?
Sorry, don't know how to calculate the f.l. but you can do drift timing with an EP of known field stop diameter to figure it out.
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