Re: [APML] OT: Mirror Re-coating

[Aplanatic@aol.com]

Tony writes:

>   I always have had good luck with QSP if you talk to them and get to know 
> them. I use the 96% coatings... aluminum with four dielectrics on top... 
this 
> way if you need to recoat they know when to quit in the green solution once 
> the dielectrics have been penetrated and the aluminum is gone.
>  The coating is very tough and stands up to a lot of cleaning and 
atmospheric 
> bummers like dew.

QSP is a first class operation, I've used them on several occasions in the 
past.  Unfortunately, I don't think they coat mirrors for amateurs any more.  
About a year ago I called them up to get a mirror aluminized and was informed 
of their change in policy.  But, it doesn't hurt to give them a shout.

I currently use Newport Glass Works.  As it turns out, until they get their 
own chamber operational, they send the mirrors to QSP to get coated -- at 
least that was told to me by the person who takes care of the mirror 
coatings.  Frankly, I can't recommend NGW even though I do a lot of business 
with them.  Their customer service is -- shouldn't use four letter words in a 
public forum -- atrocious.

I've heard good things about Clausing quality.  Many ATM's use their 
services.  I've also heard from three different people that they took longer 
to coat the mirror than they promised.

YMMV.

Dave Rowe

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