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| Optics Question
Forum List | Follow Ups | Post Message | Back to Thread Topics Posted by Robbie/">Robbie on March 29, 1998 20:27:48 UTC |
Can anyone tell me if my 1.25" focuser is cutting off too much light from my 4" f4.5 lens? How do I know if I need to switch to a 2" focuser with this very short objective lens? Please reply Thanks! |
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