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Old 17-02-2005, 05:13 PM
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Starkler (Geoff)
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Starkler is offline
 
Join Date: Sep 2004
Location: Melbourne
Posts: 4,900
I have the 20mm SV and I dont think its quite up to the task at f5.
If your 6 inch dob is f8 as Im guessing you would probably be happy with it
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