Re: [ATM] Alan Adler's Flex Mirror specs

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

Andre,
Perhaps I can help since I have had some experience with flex. If you live 
in the USA I can call you at no cost to me. S&T still offers the flex 
program flex.exe for downloading.. Or I would be pleased to act as 
intermediary and provide the information you will need. Also see 
Bill@flexmirror.com .
Bill Kelley


----- Original Message ----- 
From: "Andre Yanoviak" <andre_y6@hotmail.com>
To: <atm@atmlist.net>
Sent: Friday, December 30, 2005 4:10 PM
Subject: [ATM] Alan Adler's Flex Mirror specs


> Hi,
>
> I'm about to grind my first mirror and have chosen Alan Adler's flex 
> mirror
> design.  I feel an 8" F6 is a good balance between my abilities and
> observing goals.
>
> However, when looking through my back-issues of S&T magazine and Googling 
> on
> the web, several critical specifications have been reported differently.
> Typos, I suppose; however for all S&T's trivial ombudsman entries about 
> this
> NGC number or that, these critical figures have never been corrected? 
> (!!!)
>
> Blank Thickness: 0.65" or 0.75"?  (very important! -- determines the
> tensioning spring used)
> Blank Diameter: I'm guessing 8.25"?  (I'm trying to order from Newport
> Glass)
> f/ratio: f6 or f6.1?
> 3/8" or 1/2" thick Puller Sponge?
>
> Granted, I don't need to have an exact copy of Alan's scope, but some of
> these descrepancies could mean the difference between success and failure.
>
> Thanks,
>
> -- Andre
>
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