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Re: [ATM] Determine the glass type of a primary mirror
One easy way to get an idea is to look at the
**color** of the edge of the mirror and then to
compare it to the color of the edge of a piece of
plate glass and the color of the edge of a piece of
pyrex, or any other glass you might have availalbe as
a reference. Plate glass tends to be much darker green
than the others, not quite as dark as a wine bottle,
but sort of in that direction. Pyrex tends to be more
yellowish-white. Water-White glass is really white.
Good luck.
--- Olivier Biot <olivier.biot@versateladsl.be> wrote:
> Hi folks,
>
> How can I determine the glass type of a primary
> mirror in a non-destructive manner?
>
> Best regards,
>
> Olivier
> _______________________________________________
> ATM mailing list http://www.atmlist.net/
>
=====
Guy Brandenburg
Washington, DC
My home page:
http://home.earthlink.net/~gfbranden/GFB_Home_Page.html
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