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Equipment Discussions >> Mounts

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Doug76
Long Achro Junkie
*****

Reged: 12/05/07

Loc: Refractor Heaven
Re: My Atlas arrived! [Re: EricJD]
      #3741476 - 04/12/10 09:46 PM

Yep, they are attached with nut and bolt, before the mount is installed. Actually two nuts on each bolt, keeps them from loosening.
And yeah, made the plate. Cut an 8" disc out of a 12x12x1/4 piece of aluminum plate, then cut a 4" hole in the middle to pass the tube through. It's a tight fit for the tube, and it sits directly on the concrete pier, with the L-brackets securing it.
The only mistake I made was using four bolts imbedded in the concrete instead of three. Likely the four are stronger than three, but it was hard to level it.
BTW, the adapter for the mount came from the Orion extension posts made for the mounts (SVP model for the CG-5, Atlas post for the new Atlas).
The tube I used is 4"ID with 1/8" wall aluminum, 6" long.
The rig I made is very strong, and does not move at all, as it should be. And it was cheaper than the after-market pier plates I've seen for sale.


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