Re: ATM Mylar windows

[andydtg@alpha1.phoenix.net]

Ken Floretino wrote:

>I was wondering about using mylar as an optical window. We all know how
>expensive a glass optical window is! The views I get from my Solar Skreen
>on the sun imply that uncoated mylar might work to keep the tube currents
>down. Would anybody know where to get some uncoated mylar that would be
>optical quality?

This was tried many years ago & there was an article in S+T about it,
the guy used Mylar to cover the slot of his observatory & was able
to stay warm in the winter. I tried the stuff with my 16" Cass & found the
scatter around bright objects to be unacceptable.

I still have some of the Mylar sheet, it's 4' wide & should be shipped
rolled up. If anyone wants to play with it send a prepaid mailer tube
as long as the width you want.


Andy Saulietis / DTG Alt-Az-Fp Drive Systems
12617 Harriet Ln
Santa Fe, TX 77510 USA
409-925-8854 Voice/Fax