From: "Andreas Derwahl" 
To: "'Mel Bartels'" , "Atm-US
\(E-mail\)" 
Reply-To: "Andreas Derwahl" 



> If I understand your comment correctly, the best way to handle these
> vibrations is to not bring in the wires on axis, but aim them
> off-axis.
> There is no way that it is going to vibrate in the off-axis
> situation.   You
> have two dimensions so the wires should aim off-axis in both
> dimensions: one
> cross-ways where the wires cross at the midpoint to the
> diagonal (so they
> start spread apart at the tube or upper ring, cross each
> other, then end
> spread apart at the diagonal hub, and, aim off-axis from the
> perspective of
> looking down at the primary mirror from standing in front of
> the scope)



Thanks for your comments. So if I omit crossing the wires crossways (I want
to maintain a flat profile of the upper ring, installing channels to
seperate the eyebolts would counteract that), will I quite likely have
vibrations along the optical axis? I suppose I'll try and see what I get...

Andreas

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