Re: Re[2]: [ATM] Question about "Null-testing"

[mbartels@bbastrodesigns.com]

> Why do atms resist this wonderful test, which is so easy to do (tape a
> razor
> blade across the opening of the eyepiece draw tube?). Does anyone have

'Wonderful' test???  Not for me - I tried it more than a couple of times.  The 
problem is that seeing and the EVERY SO SLIGHTEST jitter make it impossible to 
use.  At most one gets an impression of the surface.  Now, if you are willing 
to take several seconds digital image, then that's different.  I think there's 
great room here for practical innovation.  BTW, the razor knife edge so close 
to your eye is a safety issue.

Mel Bartels
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