[ATM] Testing Techniques

[Dale Eason]

You have summed it up pretty well.  It just takes
pratice and doing it when you are not tired.

Dale Eason

--- Mitchell R <funnybone101 at embarqmail.com> wrote:

>      Hey Everyone!
> 
>  
> 
>      With the figuring on my 10" continuing I
> thought I just might stimulate
> some conversation by seeing if anyone has any tips
> or advice on getting
> accurate Foucault readings.
> 
>  
> 
>      I find practice helps, as well as my low power
> (2.5X) spotting scope. 
> 
>  
> 
>      I've found it is good to take readings going
> from center to edge then
> edge to center, and that the edge zone is a real
> bugger to get good. There
> is more diffraction around mask zones opposite the
> knife edge and that
> sometimes tricks me into nulling differently.
> 
>  
> 
>      No specific question, just looking for tips,
> advice, commentary, etc.
> 
>  
> 
> Mitch  
> 
>  
> 
>  
> 
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> 



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