Thread: Collimation fine tuning advice
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Old 24-12-2018, 09:15 AM
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Merlin66 (Ken)
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Join Date: Oct 2005
Location: Junortoun Vic
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John,
Al's Collimating Aid is an ideal tool to verify the doughnut is central....
http://www.iceinspace.com.au/forum/s...t=62696&page=2
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