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Old 15-03-2012, 12:35 PM
bratislav (Bratislav)
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Join Date: Aug 2006
Location: Europe
Posts: 235
Justin,

this coma corrector looks like the same as AstroTech model (designed by Roger Ceragioli). That one was designed to have much longer BFL distance (so an off axis pick-up prism style guiders, AO units and like could be used).
If that is true (and I'm pretty sure it is), the distance you should be shooting for is more like 75mm.
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