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Old 30-01-2012, 08:58 PM
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gregbradley
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Join Date: Feb 2006
Location: Sydney
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Quote:
Originally Posted by cventer View Post
I am not totally convinced that Pier height is that big an issue if its designed well. Mine is 1.7 meters tall with 4 gussets running entire length at 90 degrees apart. My RMS for all sky pointing is 8 arc sec which means I dont think this is flexing very much.
I agree, a bit longer shouldn't make a lot of difference in flex.

I was referring to height for comfortable viewing etc not from a flex viewpoint.

The point being make sure you allow for how high the mount will extend up plus the scope so its at a comfortable position.

RMS = root mean square which is a statistical measure of the differences in variables- its the square root of the mean average of the values in a series of numbers) of the squares of the item being measured. In this case the item being measured are the errors in pointing from what they should be.

Greg.
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