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    Re: Sextant Mirror Resilvering?
    From: Jean-Philippe Planas
    Date: 2007 Jul 19, 22:59 -0700


    jean-philippe planas <jeanphilippeplanas---.com> wrote:
    If you are willing to send your mirrors all the way to France, Navastro, a reputable company proposes mirror resilvering as well as mirror replacements (with new Freiberger mirrors etc...)
    see http://www.navastro.fr/en/index.html -> you have to select Accesories, Spare Parts, and then Technical Service in box named Other Headings. 
    JPP
     

    mat <MartinTali---.com> wrote:


    I have also been looking for re-silvering service for a while for my
    old
    C. Plath mirrors.

    Finally, I found a local amateur telescope shop in Pleasanton, CA, who
    were
    willing to experiment. They put on same reflective coating that they
    use for
    telescope mirrors for very reasonable price.

    Initially it looked pretty good, but the coating turned out not to be
    durable enough.
    After mounting and mirror adjustments the reflective layer developed
    several
    damaged spots.

    So I am planning to go for round two next week, and this time cover
    the back of
    the mirrors with protective paint before handling them.

    Does anybody have any suggestions as to what paint or varnish to use?

    I was thinking about few layer of black enamel spray, simply because I
    have a
    can at hand.

    For replacements you may also try to contact Ridge White at Robert
    White Instrument company
    in Boston (800-992-3045). They may be able to provide you with a
    replacement mirrors,
    though last time that I talked to them they said they had lost their
    silvering contractor.

    Martin


    On Jul 17, 10:56 am, Ike Stewart - shell acct
    wrote:
    > Can anyone recomend a source for a replacement mirror for a Freiberger
    > Trommelsextant (Drum Sextant) in the U.S.? If not where do you recomend
    > for resilvering? I used Texas Nautical Supply/Land Sea and Sky a year or
    > two ago, and while the service was very fast the quality of the silvering
    > was a bit less than I expected.
    >
    > Ike



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