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Subject: Re: [M]: 16" Mount Vibrations tamed for visual observing
From: R. A. Greiner
Reply To: mapug@shore.net
Date: Mon May 28 12:41:54 2001
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While you're here, how about checking out the
Astronomy Book
List ? |
The resonant frequency of this combination would be much too high.
The resonant frequency needs to be near that of the actual
disturbance.
Rob apparently found this to be near 1 Hz. Surprisingly low, but it
is a big scope. Each scope will have its own critical frequency.
Experiment with his method. Soft bungee cords and hanging masses.
Doc G
Bill Arnett wrote:
>
> As I was drifting between sleep and consciousness this morning it came
> to me that surrounding the back of the OTA with a ring of sorbothane
> which is in turn surrounded by a ring of lead might have the desired
> characteristics (and serve as a counterweight, too). Any hope of this
> idea actually working?
>
> --
> Bill Arnett
> http://nineplanets.org/ 37 27 38 N 122 16 11 W
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