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Sky Rover 102mm f11 Achro "I'm Confused"
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05-01-2019, 04:16 PM
Merlin66
(Ken)
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Join Date: Oct 2005
Location: Junortoun Vic
Posts: 8,907
Based on my measurements the prism has no or very limited impact on systems >f9. I suppose that's why all the early refractors used prism star diagonals.......
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