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Post by Dragon Man on Apr 12, 2017 17:22:14 GMT
Use a Barlow Rick
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Post by Rick in NWArk on Apr 25, 2017 20:40:38 GMT
Base focal length - Evolution 9.25: 9.25" f/10 = 2349.5mm Base focal length - Orion 80edt APO: 80mm f/6 = 480mm Barlow needed for same image scale 5x (4.895x)
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Post by Dragon Man on Apr 26, 2017 11:03:10 GMT
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