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Re: Making An Equatorial Platform For A Dobsonian

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Posted by Thad Robosson/">Thad Robosson on April 26, 1999 13:34:24 UTC

: I have seen the price of equatorial platforms and have : now concluded I should make one myself. Does anybody : have an idea where I should start or find plans? Has : anyone built one and canyou give any hints or ideas? : Please let me know. : Thanks, Dan.

Hey There!!

You might try the ATM pages. The address is...

I followed the plans (loosely) and came up with a fine fisrt attempt. I quickly figured out that one should really make the bearings out of metal or something that doesn't give. ( version 2.0 will be 1" plexiglass) I used the better pressboard, and while it does work, it is susceptable to indenting where the cone bearings sit on the ball bearings. For simple observing, it's wonderful, but my first version is not good enough for astrophotagraphy You';ll also need to figure out how to drive it. I got my stepper motor and controller from H&R at 1-800-848-8001. The linkage is the most difficult, so take some time with that. I'll be hapy to answer questions.

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