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I want to image at about 2000mm also in the future. Most scopes in the focal length range are f10 so I will reduce that for the speed. Might get a celestron 9.25” cat and reduce it to f7. That combo would get close at 1645mm.
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Eric Hahl
85 911 to 73RS backdate, a.k.a. "Gretchen" (SOLD)
2015 981 Cayman S (Sold)
23 Outback Wilderness & 23 BMW R1250GS
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