Re: [ATM] Silvering Mirrors

["Bill Kelley" <flex@commspeed.net>]

Sorry Dominic-
So much had been written about tarnish protection that I neglected to 
mention that many of the mirrors have caps that fit snugly over the mirrors 
and have a little piece of anti-tarnish cloth in the caps. We live and 
observe in a rural part of Arizona more free of sulphur than most places. 
One unprotected scope after two years has a bronze hue but the images seem 
just as bright and the bronze hue is only a bit noticeable on the moon. I 
seem to recall seeing a scope made by a member of this list with a very 
deeply tarnished mirror- but the images were brighter than you would think. 
I'm afraid that I gave the impression that silvering was for everyone. Bad 
me- not so.  However,the writers who flamed the idea do silvering a 
disservice


----- Original Message ----- 
From: "Dominic-Luc Webb" <dlwebb@canit.se>
To: "ATM Superheros" <atm@atmlist.net>
Sent: Friday, January 25, 2008 2:07 AM
Subject: Re: [ATM] Silvering Mirrors


> On Thu, 24 Jan 2008, Bill Kelley wrote:
>
>> Bummer! We do over 200 mirrors with a kit for less than $2.00 US per 
>> mirror.
>> Bill
>
> I do not dispute that silvering can be done inexpensively. The
> arguments against reside in having to frequently resurface
> the mirror and lack of affordable protective overcoats. Does
> the method you are using solve either of these?
>
> That being said, I have one aluminizing mirror in which I
> suspect there was some degradation of image quality (blurriness)
> with the protective coating. I have considered doing what
> some of the pros do, which is to just skip this coating.
> If the aluminum does not last without the coating, silvering
> might look attractive. I suspect in the end, I will regard
> myself as just having been unlucky with that one mirror,
> and all is well with aluminizing. More to the point really,
> I just wanted to peer at the skies with an unprotected mirror,
> and in some cases, even before it is aluminized.
>
> Dominic
>
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> 

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