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Old 16-03-2013, 10:09 AM
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John K
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Join Date: Sep 2005
Location: Melbourne
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Quote:
Originally Posted by Tandum View Post
I'm guessing this is a gso rc8 (1600mm). An OAG solved all my issues with that scope.
The scope is a 12.5" f/5 reflector JMI NGT 12.

The guidescope is a Lumicon 800mm superfinder with a helical focuser:
http://www.lumicon.com/store/p/230-D...er-System.aspx

Any ideas how to remove slop from a helical focuser on an 80mm short focus refractor if this is the cause?

Otherwise will have to give OAG a go.

John K.
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