Thread: The Worst Telescope You Owned/Looked Through.
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Old 13-04-2014, 03:34 PM
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cometcatcher (Kevin)
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Quote:
Originally Posted by Renato1 View Post
Very interesting about those big achromats.
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With big achros, CA gets worse with larger diameter and shorter f/D ratios, but even my 80mm F15 achro has blue fringing around bright stuff like Jupiter.
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