Re: Speculum metal mirrors

On Thu, 18 Aug 2005 02:57:27 GMT, Ed Majden <epmajden@xxxxxxx> wrote, in
part:

> Many of you have missed the whole objective. I am not trying to make a
>mirror, just a convex disk with a radius of curvature of 12 inches. Film
>will be forced against this convex curve so it will be in focus at the
>curved focal plane of a Schmidt Camera. It will not need a reflective
>surface but will be coated or anodized flat black so light is not reflected
>off the surface.

Ah. In that case, *speculum* metal, chosen to be highly reflective, is
not required.

John Savard
http://www.quadibloc.com/index.html
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