From: Guy Brandenburg 
To: Dave McCarter 
CC: Bob May , atmlist 
Reply-To: Guy Brandenburg 


Did he take that scope to Stellafane in 1994? If so, even though it was an
incredible accomplishment as far as all of the technical work, the views
were really nothing much to write home, in my ever-so-humble personal
opinion. A decently made Newtonian would beat it easily. In fact, the Yard
Scope was there that year. The views though THAT absolutely blew me away!!!

Somebody said, there are scopes you look at and there are scopes you look though.

Guy

Dave McCarter wrote:
>>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 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.


> Reminds me of Clyde Bone's Nesmith design, where a 25 inch f5 primary
> fed a 6 inch parabolic secondary, into the on axis 6 inch flat, out
> the center of the side bearing to another flat, and into a f5 high
> grade refractor. To observe you sit behind the scope and look slightly
> down. The viewing location does not change with elevation, although
> you do have to move around the scope when slewing in azimuth. Very
> nice, but I'd not like to think about all the reflection loss with
> less than perfect coatings.
>
> Dave
>
>
>

--- BBBS/NT v4.00 MP