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Equipment Discussions >> Mounts

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Pat Rochford

Reged: 09/30/08

Re: A Wooden Pier? new [Re: scopefreak]
      #5962498 - 07/09/13 04:36 PM

Hello Kevin,

What I need to do is build a larger observatory ... I'm still using the 6' x 12' roll off roof I made for my original 8" LX 200. (Half of the observatory is a warm room, so the 14" is sitting in a 6' x 6' space. Cramped is putting it mildly!)

A friend of mine made me a pier for the 14" out of a section of a ship's bridge mast. It is 12" diameter aluminum with base and top plates, about 42" tall. I've already drilled and tapped it for my APT wedge. Again, all I need to do now is build a larger structure to put it and the scope in.

If I can ever get the ambition and money together at the same time I'll do it and post a picture or two.


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Reged: 03/10/12

Loc: Georgia.
Re: A Wooden Pier? new [Re: Pat Rochford]
      #5965762 - 07/11/13 02:09 PM

Mine is concrete. No vibration to speak of.

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Reged: 10/19/10

Loc: Rapid CIty, SD
Re: A Wooden Pier? new [Re: Kraus]
      #5965943 - 07/11/13 03:49 PM


Yup. I bet it doesn't.

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Reged: 06/24/09

Re: A Wooden Pier? new [Re: Raginar]
      #5968711 - 07/13/13 09:26 AM

It's a beautiful piece of work. I consider a three second damping time to be just so-so, however. My wood tripod does better as does the ATS pier which however cost 5x what you paid for your pier. The damping time of the pier however may not matter very much. If the pier is isolated from the floor, you won't have much cause to worry about damping issues in an observatory set up. You won't be in the wind and there won't be passers-by. Damping time does matter to me in the sense that I don't like to get a three second bounce when I touch the focuser, which happens on a *lot* of commercial set ups. But that is a function of the mount and the pier together; you would have to test them as a set-up.

The damping qualities of wood are generally considered to be excellent, one of the reasons it continues to be used in tripods.

Greg N

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scholastic sledgehammer

Reged: 04/14/04

Loc: Mayslick KY
Re: A Wooden Pier? new [Re: gnowellsct]
      #5968789 - 07/13/13 10:37 AM

Thanks for the compliment on my pier. The damping time was just a rough estimate after "thumping" the top of the unit while observing. The pier is isolated from the floor by 2" all around the concrete sonotube that is in the ground 5'. The only contact I ever have with the scope/mount combo is when I change EP's or adjust the sliding counter weight when adding/subtracting equipment. I also never touch the focus controls on either the scope of the EV focuser. Both are controlled by computer or HC boxes.

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