Thread: Focal length of barlow lens
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Old 06-07-2006, 10:07 PM
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5ash (Philip)
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Join Date: Mar 2005
Location: Hunter valley. nsw
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Focal length of barlow lens
Does any one know the Focal length( negative of course ) for your typical x2 or x3 barlow lens. I want to make one to insert into the visual back of my SCT to increase its focal length for photography.
regards philip
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