Thread: Celestron 11" f/2.2 Rowe-Ackermann Schmidt Astrograph (RASA) optical tube
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Old 07-07-2014, 10:00 PM
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Camelopardalis (Dunk)
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Camelopardalis is offline 		 
Join Date: Feb 2013
Location: Brisbane
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55mm happens to be normal for DSLR....
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