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Old 14-04-2011, 11:59 AM
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Paul Haese
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Join Date: Jan 2009
Location: Adelaide
Posts: 9,991
Diameter of the pier is extremely important. Get 200mm and above for diameter. It really does make a huge difference. 150 will be too narrow for astro imaging with bigger gear. This is something you only want to do once in my opinion, so get the largest diameter possible. Wall thickness contributes but not as much as diameter.
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