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What to buy
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08-07-2017, 11:43 AM
Atmos
(Colin)
Ultimate Noob
Join Date: Aug 2011
Location: Melbourne
Posts: 6,989
You are correct that collimation is more forgiving at F/6 than F/4.9 but not by that much. If travel isn't going to be an issue going the 10" over the 8" would be a good choice. That extra aperture will be worth it.
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