Image of the day

From the
ATWB Customer Gallery

The Bode Nebula

My Account

New to Astromart?

Register an account...

Need Help?

Newtonian tube

Started by duane, 04/17/2015 05:06PM
Posted 04/17/2015 05:06PM | Edited 05/26/2015 05:02PM Opening Post
I'm going to build a Newtonian tube for general visual use, either an 8" or 10" (have not decided yet).

I like the idea of the Royce conical mirrors... less weight and he claims the conical will cool faster.

I'm open with respect to most of the other components, so I'm looking for comments/suggestions for the focuser, mirror mount, spider, tube, etc. Cost is not a particularly big issue for the project. I'd like to do everything I can to improve thermal management, so I'll have a fan in the bottom of the tube. From what I've read, an unpainted aluminum tube has good thermal properties (low emissivity, I believe?).