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Old 06-11-2012, 12:49 AM
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Tandum (Robin)
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3" coma corrector.

Is there an alternative to the asa 3" Wynne corrector.

I need one with at least a 43mm corrected field.
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  #2  
Old 06-11-2012, 06:31 PM
clive milne
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Yes:

http://www.hubbleoptics.com/HNA.html

Obviously, these only work with hyperbolic primaries.
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Old 07-11-2012, 06:01 PM
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Tandum (Robin)
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Interesting combo there Clive thanks.

But the corrector is 3.5" and only has a 40mm corrected field so not exactly what I'm after.
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