From: "Kristopher Barrett" 
To: 
Reply-To: "Kristopher Barrett" 


> What is interesting to me is that the large telescopes that have been
> made by amateurs have all been Newts.  Considering the short FL designs
> with a tall ladder, it is kind of odd that the makers didn't make cass.
> designs. There's no need to perforate the primary as a tertiary flat

If you drill a bolt-hole for the tertiary mount stalk, you get zero new
obstructions, and a secure mount. A small hole can be drilled with soft
rod-stock and slurry. Much simpler than cutting a large hole.

> mirror will bring the focus out to the side at any appropiate height
> (imagine the Yard Scope with an eyepiece at eye level!) that would be
> desired.  Such a design also allows for a better field of view as the
> requirement for the focal length to be behind the primary isn't there.
> Bob May

--
Regards,
Kristopher Barrett    http://www.cotse.net/users/kbarrett

--- BBBS/NT v4.00 MP