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solar imaging with a daystar quark?
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17-03-2019, 11:29 AM
Merlin66
(Ken)
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Join Date: Oct 2005
Location: Junortoun Vic
Posts: 8,904
Steve,
Exactly which OTA do you have???
I could understand a triplet objective, or a Petzval design with a rear element.....
Merlin66
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