Thread: Transit of Venus
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Old 04-04-2012, 10:43 PM
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barx1963 (Malcolm)
Bright the hawk's flight

barx1963 is offline 		 
Join Date: Nov 2008
Location: Mt Duneed Vic
Posts: 3,982
Possibly a Cassegrain? In those days the focal ratios would have been much slower.

Malcolm
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