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I believe that the (later production year)
C. Plath mirrors have the same size as Cassens Plath
mirrors. If this is so, why not to buy replacement mirrors
directly from Cassens-Plath?

Alex

On Thu, 19 Jul 2007, mat 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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