Bill,

My pier is separate from the building supports (cemented posts). On the
North end of the building there isn't a huge distance between the posts
and the pier mass - the center of the pier is 4' from the North wall of
the building. The pier mass is 3' diameter X 3' deep.

I can have someone jump up and down inside the building while I view
with high power and see NO vibration transferred to the 'scope.

This is my own experience keeping them separate. I can't say in the
connected configuration, but I'm very pleased with the way mine is
working.

Bill Arnett wrote:
>
> With luck, I'll be pouring the foundations for my observatory and

<<SNIP>>

> pier. So in one case the vibrations from walking on the floor will
> be transmitted to the foundations, thru the ground to the pier. In
> the other case the path thru the ground will be replaced by more
> concrete. Comments?
>
> Bill Arnett
> http://www.seds.org/billa/
>
> "I know that I am mortal and the creature of a day; but when I search
> out the massed wheeling circles of the stars, my feet no longer touch
> the earth, but, side by side with Zeus himself, I take my fill of
> ambrosia, the food of the gods." -- Claudius Ptolemaeus

--
Bob
~36N/84W
http://www.usit.com/rfreeze

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