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Well.. first do you have reflector or refractor in mind?
Obviously, refractors will tend to use higher pier, because this is more comfortable for observing.
For reflectors, you do not want to hit the ground with the bottom of the tube, and you want to have a comfortable position of the eyepiece when looking at objects close to zenith at the same time. This will determine the pier hight in your particular case..
In my case, it is 43cm for my dobson. It was similar height (slightly lower) for concrete pier when I was using german equatorial mount for the same optics
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Last edited by bojan; 04-06-2007 at 12:04 PM.
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