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2.5X Or 5X Barlow?

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Posted by Dave on July 2, 2003 14:52:06 UTC

Hi,

I have an eyepiece calculator you can download for free at www.nexstar11.com, select "Downloads" then look for a program nameed T-Calc. It will take in a few data points and give you pretty much all that can be figured out based on them. That will help you decide what barlow to get based on your eyepiece selections

Dave

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