Quote:
Originally Posted by Tandum
I'm guessing this is a gso rc8 (1600mm). An OAG solved all my issues with that scope.
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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.