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A Different Sorbothane Question   Message List  
Reply | Forward Message #134791 of 136650 |
Re: A Different Sorbothane Question

--- In telescopes@yahoogroups.com, "Alan Levin" <ailevin@...> wrote:
>
> >
> I have a couch potato telescope chair
>
> http://www.geocities.com/lwraif/SimP/
>
> My heartbeat is transferred through the chair to the platform
> and up through the struts to the binoculars so that I see
> a regular shake in my 14x70 binoculars.
>
> I am looking for suggestions of where and how to apply sorbothane
> or other anti-vibration padding between the chair and the
> platform.
>
> Before reading this thread I was just going to go find some
> sort of foam to put around the bottom tubing of the chair.
>
> *********************
Anybody able to give a reason wny putting the anti-vibe between the
binculars and the frame is better or worse than putting it between
the chair and the ground?

Gene




Thu Nov 20, 2008 7:20 pm

g2baraff
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Message #134791 of 136650 |
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Apologies in advance if this is considered OT, but I wanted to follow up on the good discussion of vibration damping for telescope with a question about a...
Alan Levin
Alan_OCA
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Nov 20, 2008
6:42 pm

Alan, The vibration frequency of a heartbeat is very low, about 1 Hz with overtones up to several Hz. Also, the mass that needs damping is much greater than...
Al Germaine
trulyyours05
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Nov 20, 2008
7:20 pm

... Anybody able to give a reason wny putting the anti-vibe between the binculars and the frame is better or worse than putting it between the chair and the...
Gene Baraff
g2baraff
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Nov 20, 2008
7:20 pm

From: "Gene Baraff" <g2baraff@...> ... Alan, after looking at the Couch Potato mount, I'd say that at the risk of reducing the portability of the...
Jack & Lynn Kramer
starward12
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Nov 20, 2008
8:19 pm

Jack and Others, Perhaps I'm wrong, but here is my model of what is going on here. The chair sits on a piece of plywood that turns on a lazy susan bearing ...
Alan Levin
Alan_OCA
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Nov 21, 2008
5:48 pm

Alan, The actual details of how motion is being transmitted to the eyepiece could be quite complicated. What do you see in the eyepiece? Vibration above 10 Hz...
Al Germaine
trulyyours05
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Nov 22, 2008
12:41 am
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