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| Low Profile Focuser Question
Forum List | Follow Ups | Post Message | Back to Thread Topics Posted by Matt Bourdeau on April 19, 2003 13:26:38 UTC |
I'm wondering if using a long barlow will cause vignetting in a low profile focuser. It is home made and stands about 1.75" tall halfway racked-in. It is a 4.5" f/8 Newt. |
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