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11 messages added in the last 7 days
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  • Re: What Point Mirror Cell?

    Nils Thank you. I am getting the idea. I am working on a 12.5" f/5 Dob and have been looking at ideas on how to build it light weight. I like to make

    ad_prasad 16 hours ago
  • Re: What Point Mirror Cell?

    Thanks Waldo for digging out more details - apologies Prasad for being a bit late replying. The screws holding the T section rocker bars are threaded into the

    nilsolofcarlin 1 day ago
  • Re: What Point Mirror Cell?

    Greg, You missed a subtle difference between Nils Olaf cells and Hinges. Nils Olaf cell uses only two collimation adjustment bolts and are accessible from the

    atmpob 1 day ago
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Group Description

This Group is for the FREE exchange of ideas related to Amateur Telescope Making (ATM).

Have fun, be kind, play fair, learn, teach, participate.

Here's a contributed photo of a homemade 22 inch tube (before painting) for an Astrograph built by Dave Tandy. The full size photo can be viewed by ATM_FREE members in the "Photos" section. Check out the ATM_FREE Group's discussion for more info on this project and other things we are doing.

Ken Hunter

Group Information

  • 1593
  • Telescopes
  • Jun 1, 2002
  • English

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  • This is a public group.
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