Quote:
Originally Posted by Wavytone
My instinct is they’re pretty much equal. Despite the LP having better glass capable of better correction in angular terms, a focal ratio of f/6 pretty much negates any advantage it may have had for lateral and longitudinal chromatic aberration.
Despite the availability of modern glass types, many refractor designs exploit this to achieve faster f/ratios or wider fields of view - but not image quality better than the basic ¼ wave criterion.
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That's why I could never really understand why some folks would be happy to pay in excess of $10k for a 5" F/6.3 refractor, a decade after they put their name on a waiting list.