Re: ATM coatings for telescope mirrors

[Andy Saulietis <iss@pvtnetworks.net>]

Ric writes,

>> I have close fitting plexiglass covers on my scopes also. Another
>
>Wouldn't the plexiglass out gas and coat the coating?

I don't think Plexiglass outgasses like a lot of other
plastics. I've used them on 24" & 32" scopes (Houston), and
a 32" (W texas) for years with no problems, with
summerime temps cycling daily in the 100's. The 24"
cover slides into a slot about 1" in front of the mirror,
the 32" are attached with clips in a recess. 

You only forget to remove the cover *once* when using
the scope...:)




Andy Saulietis
ISS Enterprises
39 Silver Fox Trail
Mayhill NM 88339
505-687-3067 voice
505-687-3021 fax, call voice or e-mail to set up
e-mail: iss@pvtnetworks.net