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Old 24-08-2010, 06:40 PM
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Tandum (Robin)
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Join Date: Apr 2008
Location: Wynnum West, Brisbane.
Posts: 4,166
FSQ85ED from tak. F5.3 for 450mm with a 44mm image circle and doesn't need a flattener. Add the reducer and get F3.86 for 328mm with a 40mm image circle. 72mm focuser should handle any camera and will last you a life time for about US$3K new.
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