[ATM] Celestron 20" R-C telescope

[artbianconi@blast.net]

Hello Vladimir,

The attachment you referenced was missing but my memeory of the Mt 
Palomar geometry suggests you are probably correct.

The orginal photos I took are too large for transmission so I've 
attached some lower resolution JPG's. I am trying a different 
graphical encoding method, please let me know if the images were 
satisfactory.

It would be interesting to see how they might look if some of the 
classical telescope designs of 60 and 70 years ago were redesigned 
with modern materials.

Thanks for responding.

Art

On 4 May 2004 at 15:44, Vladimir Galogaza wrote:

Art,

What you have described reminds me on Serruier truss
(see attached image).

Why Celestron decided on it I do not know, but its unique feature is
to counteract decollimation problems due to truss flexing at 
different elevations. Serruier truss is not loosing collimation 
because both parts flex by equal amount in spite of unequal length 
(due to weight) distribution) and primary and secondary mirrors 
remain in collimation.

I think that it was designed for 200" MtPalomar telescope.

Vladimir.







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