[time-nuts] List of time synchronization hardware and software

Magnus Danielson cfmd at bredband.net
Tue Jan 17 12:40:50 EST 2006

From: shoppa at trailing-edge.com (Tim Shoppa)
Subject: Re: [time-nuts] List of time synchronization hardware and software
Date: Mon, 16 Jan 2006 20:20:55 -0500
Message-ID: <20060117012055.37824BA483E at mini-me.trailing-edge.com>

> James Maynard <james.h.maynard at usa.net> wrote:
> > Brooke Clarke wrote:
> > > Astronomical methods, such as sundials might deserve a place on the list.
> > Indeed.  Sundials, or menhirs, such as those at Stonehenge!
> Even better, pulsars. They have a period that is usually the same order
> of magnitude as a second, and some of them are regular enough that they
> are similar in stability as an atomic clock (how many of us have
> cesium beam tubes that will last for billions of years, hmmm?)

How many of us have a pulsar-monitoring suitable parabol standing on the back
I think a new Caesium-beam cascade is *MUCH* cheaper.

But besides that, pulsars are cool. Since the planet is orbiting, a few pulsar
needs to be continously measured and compensation needs to be performed for the
rotation. Isn't those used for monitoring the UTC deviations in VLBI?


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