Thread: Which Guide scope for a Celestron CPC 9.25
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Old 17-01-2015, 02:50 PM
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John K
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Quote:
Originally Posted by Ramsees View Post
Hi Folks,

I just bought the new Celestron CPC 9.25 HD-EDGE and have attached to it an F6.2 Lepus focal reducer . I am guiding with a 60mm APM Deluxe guide-scope which is 284 Focal length. after a few discussion with the American company OPTCORP they said that to guide properly you need a minimum guide-scope that is 4 times less than the original focal length of the main scope. with the focal reducur I will have a FL of 1457mm divided it by 4 = 364 FL required for the guide-scope. would the APM still work in your opinion.

Thanks
Unless you have a super duty mount permanently set up, at that focal length, you might find OAG is the way to go. Consider spending the cash on a sensitive guider and OAG set up.
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