Re: [ATM] Mirror Cells - types, (dis)advantages,about flotation and PLOP

["Mel Bartels" <mbartels@bbastrodesigns.com>]

> Flotation disadvantages:
> More complex and expensive, harder to build
> "Stiction" occurring in joints and pivots needs to be minimized by 
> material
> selection and component design


The main comment I'd add is that for larger thinner mirrors, the 'stiction' 
issue is as much of a challenge as the arrangement of the support points. 
It only takes an ounce of 'stiction' to upset the support.

Mel Bartels 

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