Re: [APML]: newts

[Wil Milan <wmilan@airdigital.com>]

Bobby Middleton wrote:

> Are there Newtonians built well enough to use a guidescope
> for guiding with? I know flexure is an issue with Newts and
> guidescopes, but is one forced to off-axis guide to get good
> results? I am looking for a new weapon in my arsenol in the
> 800-100mm focal length and am considering a Newt as one
> option.

A properly designed Newtonian can work fine with a guide scope,
particularly a smaller one such as what you have in mind. As I mentioned
in another message, I used to use my 8" f/4 Schmidt-Newtonian with
external guide scopes and it worked fine. Keeping it rigid enough for
external guiding becomes harder and harder as the scope becomes larger,
however.

Wil M.
--
"When I consider your heavens, the work of your fingers,
the moon and the stars which You have set in place,
what is Man that you are mindful of him,
or the son of Man that you care for him?"  -- Psalm 8