Re: ATM coatings for telescope mirrors

[Andy Saulietis <iss@pvtnetworks.net>]

Tom K writes,

>I can't comment on durability of various coatings, but....
>
>Proper care is very important.  Sure, there's the avoidance of dew, but
>there is something else you can do to extend the life of you coating, no
>matter what type.  If at all possible, make an inner mirror cover that is a
>'lid' that covers the mirror (not a cover for the scope tube)...the
>principle here is to make a mirror cover that traps as little air as
>possible.

I have close fitting plexiglass covers on my scopes also. Another
way, for scopes not used too often, would be to coat them with
collodion of the commercial equivalent, which would stop coating deterioration
& give you a *clean* mirror when removed for use. 


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