Thread: jmi focuser
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  #9  
Old 12-05-2020, 04:10 PM
rrussell1962
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rrussell1962 is offline 		 
Join Date: May 2014
Location: Brisbane
Posts: 494
If you move the primary up the tube will your secondary still be large enough? Although I can see that it would have to be very marginally sized for 10mm to be an issue.
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