From: "Mel Bartels" 
To: 
Reply-To: "Mel Bartels" 


Rats! I left out the most critical part - a vacuum pulled on the back side
to bring the mirror to f/10 or so.

Mel Bartels


> I was asked in a private email the derivation of the deformed shape where:
>
> 1. glass considered thin meniscus of constant thickness (ex. 12 inch
> diameter, 1/4 inch thick)
>
> 2. glass supported at extreme edge (supported inward better???)
>
> 3. glass facing upward towards zenith
>
> What is the resulting shape?
>

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