Hi Joel,
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Some pics of my pier attached. Below the rat-cage, I have a 4" OD solid aluminum cylinder bolted to one side of railroad track cemented into the ground, and another 2x3" aluminum bar on the other side. The aluminum plates under the pier head are 3/4" x 7" OD which are not easy to find. But you can see I drilled and tapped them so they can be leveled as needed - it's hard to get a pier perfectly level so some adjustment is often needed.
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Regards,
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John
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Losmandy G11G2 on pier; refurbed Losmandy G11 with OnStep controller; SkyShed design roll-off observatory; ZWO ASI2600MM-P; ZWO ASI071MC; Sky-Watcher Esprit 100 ED with field flattener; Celestron C925 Edge HD with 0.7XFR, William Optics Zenithstar 61 APO; PHD2, NINA, Sequence Generator Pro and PixInsight user
