Astronomy Site: Meade Advanced Products Users Group Archive: Re: [M]: "Ultra" bright mirror coatings


 

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Subject: Re: [M]: "Ultra" bright mirror coatings
From: Ric L Ecker
Reply To: mapug@shore.net
Date: Thu May 20 17:03:17 1999

While you're here, how about checking out the Astronomy Book List ?


writes:
>
>Hi
>
>Does anyone know if Meade (or Celestron) is planning to use the
>Ultra/Ever/Maxi bright special mirror coatings now used by
>Astro-Physics
>and Televue in their 2" mirror diagonals. These mirrors give 99%
>instead of
>86% of standard mirrors and are much more resistant. The important
>thing is
>not the extra 13% light we get, is that the scattered light is reduced
>in a
>14 / 1 ratio, much improving contrast in some objects, like planets
>and
>mainly the sun.
>I for one would be very interested in such scopes.
>Maybe it is possible to send our mirrors to the company who makes this
>
>coatings to AP and TV. Does anyone know the company ?
>
>Pedro Santos

Give QSP Coating Co. a call, they are listed in S & T. They have lots of
coatings to choose from and I have used them before. They most of the
big mirrors and have mil. spec. coatings............The 99% coatings that
they use to sell (5 years ago) were pretty much permenent coatings, where
as, they can't be recoated. Things have changed since then so give them
a call if interested..............My coatings (5yrs ago) where better
than 96% at QSP......................ric

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