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23 November 2024 21:39

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Question

Asked by: Peter Abrahams
Subject: gyroscopes & telescopes
Question: Has anyone heard of mounting a gyro on a telescope?
Say you were to place a telescope, a smaller refractor for example, in a free moving 3 axis gimbal. Then mount a gyroscope on the tube, near the center of gravity. It would have to be a precision gyro to avoid vibrations. With the gyro spinning, if you point the telescope at a star, it should stay on the star as the earth turns beneath it.
I wouldn't say it was an easy way to track a star.
But back in the great days of mechanical engineering, the late 1800s, someone might well have done this.

Since Foucault is associated with gyroscopes & with telescopes, I'm sure he thought of this.....is there any evidence he tried this?

thanks
Peter Abrahams
http://home.europa.com/~telscope/binotele.htm
Date: 6 April 2004
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Answers (Ordered by Date)


Answer: webmaster@gyroscopes.org - 06/06/2004 21:05:51
 I know gyroscopes have been used to position telescopes indirectly (motors control the direction and the gyroscopes sense the earths/telescopes rotation).

I can't say I've heard of anyone directly attaching a gyroscope to a telescope to steady or to dampen vibrations. However some military binoculars do have such a setup. I've seen pictures of ones with a gyroscope attached underneath (cude) and ones with gyroscopes directly connected to the optics/mirrors. They come up on ebay about once a year.

I'm sure Foucault must have thought about bringing a gyroscope and a telescope together, yet to see any reference that he did.

Interestingly one of the earliest references to a gyroscope (the term gyroscope is not used) is a seron's speculum. This in effects acts like a gyroscopic sextant and was used breifly by the navy around 1754. To look at, its basically a large spinning top with a mirror on to. You have it on the deck, while the the ship rolls around the mirror stays flat.

Get back to me if you find out anything more.



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