Re: [ATM] Illuminated field question

["Don Clement" <don_clement@charter.net>]

> If the x-y finder is a bad idea, I'd appreciate any pointers to ATM or
> commercial X-Y adjustable guide
> scope rings, as the 3 screw type look like a real fiddle to adjust.
>

I have always thought that the 3 screw type guide scope supports were a PIA
to use. Adjusting one screw affects the other adjustments as the adjustment
screws are not independent of each other. I have designed and built two
separate solutions to supporting a guide scope using two independent
adjustment screws. Adjusting one screw does not affect the adjustment of the
other axis.  One design that was a precursor to my compliant focuser uses
three triangular plates pivoted on orthogonal sides using pairs of
split-cross flexures. Another design used a  single ball bearing pivot with
two spring-loaded adjustment screws at right angles. Both designs are posted
in the ATM archives, perhaps ten years or more back.



Don Clement

Running Springs, California
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