Subj : Re: Truss tube design?
To   : sci.astro.amateur
From : starman <starman@tech.net>
Date : Thu Jan 01 2004 03:10 am

Len Philpot wrote:
> 
> In article <3FEE5AB9.A554FE42@tech.net>, starman@tech.net says...
> > I have the parts for making an open truss telescope tube for a 10-inch
> > f-5.6 mirror. I plan to use eight 3/4-inch dia. aluminum tubes in pairs
> > to make the angled supporting trusses between the upper and lower body
> > tubes, which are 12-inch dia. thin wall plastic PVC. My question is how
> > best to attach the aluminum truss tubing to the body tubes. I'd prefer
> > to make some kind of adapter for the ends of each truss tube rather than
> > just flattening the ends. I would appreciate your suggestions on this
> > subject along with ideas on how to reinforce the plastic body tubes so
> > they will remain round under load.
> 
> Without going into endless detail here, I'd /strongly/ recommend
> purchasing and reading _The Dobsonian Telescope_, by David Kriege and
> Richard Berry (before you build). LOTS of good info in there, including
> exactly what you're asking. With the exception of a section on an 8"
> Dob, it's biased toward large aperture truss scopes, but it's full of
> real good stuff nonetheless.
> 
> You can get the book from Willmann-Bell at
> http://www.willbell.com/tm/dobtel.htm
> 
> There's also a listing of the Table of Contents there that will give
> you a good idea of the book's coverage of the subject.

Thanks. Do you know what year is the latest edition?


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