Back to Home

ATM Forum Message

Forums: Atm · Astrophotography · Blackholes · Blackholes2 · CCD · Celestron · Domes · Education
Eyepieces · Meade · Misc. · God and Science · SETI · Software · UFO · XEphem
RSS Button

Home | Discussion Forums | Amateur Telescope Making | Post

Be the first pioneers to continue the Astronomy Discussions at our new Astronomy meeting place...
The Space and Astronomy Agora
Dob Problems

Forum List | Follow Ups | Post Message | Back to Thread Topics | In Response To
Posted by Robert May on January 13, 2004 01:50:51 UTC

The smoothness of a dob mount depends upon the amount of force on the bearings. You are problably having the major troubles with the up/down motion and that can be fixed by moving the pads closer together for a more slippery motion with less force while further apart will make the force needed to move the scope higher.
The left/right bearings are a bit more difficult and the thing here is that the bearings need to be the right size, out near the edges of the baseboard and that the center pin can't be pulling the rocker box to the baseboard.
In addition, the materials used can make a big difference in the feel of the scope, the knobby type formica being about the best to run against the teflon of the bearing blocks.
I'll also note that dirt can make the motions very stiff so an occasional cleaning of the blocks is in order.
Hope this helps and if you need more info, feel free to ask.

Follow Ups:

    Login to Post
    Additional Information
    About Astronomy Net | Advertise on Astronomy Net | Contact & Comments | Privacy Policy
    Unless otherwise specified, web site content Copyright 1994-2024 John Huggins All Rights Reserved
    Forum posts are Copyright their authors as specified in the heading above the post.
    "dbHTML," "AstroGuide," "ASTRONOMY.NET" & "VA.NET"
    are trademarks of John Huggins