Thread: Shortening a refractor
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Old 26-05-2007, 10:13 PM
bloodhound31
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Shortening a refractor
What effect would shortening the OTA of a refractor have?

I have a cheap and nasty 600mm refractor with a focal length of 900mm.

How much if any, can I shorten it by and would this improve anything?

Curious,

Baz.
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