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Old 28-09-2020, 10:07 AM
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Peter Ward
Galaxy hitchhiking guide

Peter Ward is offline
 
Join Date: Dec 2007
Location: The Shire
Posts: 7,136
Spherochromatism is likely once you go outside the design spectrum of a refractor....and near I/R would place you there with many telescopes.

As Marc pointed out, more exotic telescopes are usually less affected.

The problem will disappear with a well corrected reflector.
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