Thread: Coma and Barlows
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Old 24-04-2014, 06:20 PM
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Merlin66 (Ken)
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This aspect of "barlows" is well discussed and explained in" Telescope, Eyepieces, Astrographs" by Hallock-Smith, Ceragioli and Berry, p 373.
(That's why I mentioned the Klee design)
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