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Old 21-03-2012, 11:09 PM
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allan gould
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allan gould is offline
 
Join Date: May 2005
Location: Brisbane
Posts: 4,485
A good concrete band about 50 cm wide and 7.238 cm wide should stiffen it sufficiently from my calculations. But the main flex would probably be due to that garish focuser inducing flex as the tube tries to get way from it. Shoulda got a red one or at least a green one.
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