[ATM] Alan Adler's Flex Mirror specs

["Andre Yanoviak" <andre_y6@hotmail.com>]

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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