Re: [ATM] ATM: Slit equipped and slitless testers-

["David Harbour" <stainless_steel@suddenlink.net>]

Mel,

How interesting that you mention Howard's book. When I was young, I thought 
thumbing through that book was kind of like being in heaven; memories; I 
guess, maybe, that is what old age is for.

Thanks-

R-101/
Davey/

P.S.- Uh, also, I admire your... well, I want to use a certain word, but let 
us be polite- your rebellious instinct when you were young. Well done, Mel. 
I hope you didn't actually foment any revolutions anywhere (unless they 
needed fomenting!!!)


----- Original Message ----- 
From: "bbastro1" <mbartels@bbastrodesigns.com>
To: <atm@atmlist.net>
Sent: Sunday, May 18, 2008 10:30 AM
Subject: Re: [ATM] ATM: Slit equipped and slitless testers-


>>>>
> detail, merely adds diffraction artifacts.  If anybody's interested in
> seeing
> them I'll send you a copy.  BTW I now use a 200 micron slit on my tester -
> same
> as you.
> <<<
>
> Interesting - when I started mirror making in the '70's I quickly settled 
> on
> a very wide slit from a design in Howard's book.  I never thought more
> deeply as to why the wider slit would work because of the satisfaction of
> breaking the mold and going against dogma.
>
> Mel Bartels
>
>
> _______________________________________________
> ATM mailing list http://www.atmlist.net/
> 


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