Thread: Wide field APO refractor ... which one?
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  #18  
Old 12-07-2018, 11:46 AM
JA
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JA is offline 		 
Join Date: Oct 2016
Location: Melbourne, Australia
Posts: 3,052
STEP 2. Obtain a 1/4-20 socket head capscrew of appropriate length (probably in the 10 to 15mm length range), Stainless Steel is good as shown:
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