Thread: 120 mm or 102 mm f/5 refractor for rich field visual?
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Old 15-02-2014, 07:40 PM
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Camelopardalis (Dunk)
Drifting from the pole

Camelopardalis is offline 		 
Join Date: Feb 2013
Location: Brisbane
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Awwww Barry missing out for sure

Keep the focal length as short as possible, although that's somewhat at odds with an achro
In my ZS71 I get (theoretically) 6.3 degrees TFOV with my widest 2" eyepiece
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