Re: [ATM] New Mirror Cooling simulation software

[Alexis Cousein <al@sgi.com>]

Jan van Gastel wrote:
> For a 20 inch diameter 2 inch thickness mirror, the 
> bending will be about 0.15 lambda, using only a front fan, 0.56 mm without 
> using a fan and 0.82 lambda using only a back fan, if I do the calculations 
> right. I used your 0.04 radiation value.

I suspect, though, that the primary effect caused by this is going to
be a focal length change rather than an aberration that destroys the image.

Once you refit the surface to a paraboloid, I doubt you'll be left with
residual values for surface errors that are as large fractions of lambda.



-- 
Alexis Cousein                                  al@sgi.com
Senior Systems Engineer/Solutions Architect     SGI/Silicon Graphics
--
<If I have seen further, it is by standing on reference manuals>

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