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Old 04-11-2009, 12:01 AM
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[1ponders] (Paul)
Retired, damn no pension

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Join Date: Nov 2004
Location: Obi Obi, Qld
Posts: 18,778
Did you find much use for the U and the B filters considering sky extinction. What camera were you using them with for sensitivity in the U and B range? I would be thinking of using an ST7.