Re: ATM coatings for telescope mirrors

[Karl E Lewis <kal1971@juno.com>]

Tom's idea sounds like a good one. Texereau suggests the same thing.

Tom, would you please elaborate on the effect on the mirror's coating of
trapped air between the primary and the open end of the tube?
Additionally, pleae describe your mirror cap. I believe Texereau mentions
a glass cover, although any material that does not attract or hold dust
should be suitable.

Karl

On Sun, 22 Apr 2001 09:05:57 -0600 "Tom & Lou Krajci"
<krajcit@3lefties.com> writes:
[SNIP] 
>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.
[SNIP]

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