Re: [ATM] Thermal mirror deformation

[Ric Rokosz <radicell2@yahoo.com>]

--- starzkey@charter.net wrote:

> Someday, I'll get around to trying this idea, which
> has been kicking around in the back of my head for
> years, but for now, I'll just ask the group; Has
> anyone tried using a mirror with a central
> perforation, mounted on a central hub that also
> functions as a plenum for sucking a continuous
> stream of air from the region in front of the 
> mirror surface and exhausting the air out the back?
> The air might enter the plenum via a multitude of
> radially oriented holes, located a small distance in
> front of the optical surface.

Didn't Tom Kujic report on this for the newer Apache
point telescope about a year ago?The pro's have
tried/done this from what I recall from Tom's post.He
also had a link to an article if I'm not mistaken.

Ric

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