Thread: Jaw dropping optics from TEC
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Old 28-12-2012, 01:52 PM
clive milne
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clive milne is offline 		 
Join Date: May 2011
Location: Freo WA
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Jaw dropping optics from TEC
http://www.baader-planetarium.de/tec...300mm_7deg.pdf

A modified 12" houghton cassegrain that can cover a full 16803 chip with pixel limited images.....

at a focal ratio of;

drum roll...


f1.44
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