Thread: 120 mm F/12.5 doublet
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Old 15-01-2020, 05:45 AM
AstroApprentice (Jason)
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AstroApprentice is offline 		 
Join Date: Dec 2015
Location: Melbourne, Australia
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120 mm F/12.5 doublet
Rare to see someone making what appears to be a quality long focus doublet...
http://www.frtelescopes.com/frt120ded.html
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