Thread: Using GSO Imaging Newts with binoviewers
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Old 22-07-2013, 01:00 PM
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Lee
Colour is over-rated

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Join Date: Sep 2005
Location: Newcastle, Australia
Posts: 2,414
I did some measurements on my 200mm f/4 newt, in this thread.
It doesn't seem they have added very much back focus....
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