Re: serious question for book

From: harry palmer (rob_at_aol.com)
Date: 03/28/05 

Date: Mon, 28 Mar 2005 14:41:56 GMT

"George Dishman" <george@briar.demon.co.uk> wrote in message
news:d294f6$orc$1@news.freedom2surf.net...
>
> "harry palmer" <rob@aol.com> wrote in message
> news:50U1e.12043$ZB6.6706@newssvr19.news.prodigy.com...
> >
> > First of all Claus, thank you so much for such a considered and
> > interesting
> > response. I'll re read it but you have answered my question exactly how
I
> > was hoping it would be. I think your precession idea is the easiest to
> > describe and with a little research on my part, most sensible to
> > implement.
>
> If the date isn't too far different from the
> present, they could get a good idea using
> Barnard's star.
>
> http://www.hwy.com.au/~sjquirk/images/barnard.html
>
> Too many years would make it hard to find even
> though the track is obviously well known. If
> it couldn't be found, I would go down a list in
> decreasing order of proper motion until I could
> find something, get an estimate from that and
> use it to locate higher speed stars. Higher
> speed would give better accuracy.
>
> You can search for stars with more than some
> value of proper motion using Simbad but it
> isn't responding to me at the moment and the
> Hipparcos server seems to be down too. :-(
>
> HTH
> George
>
>

Sorry George this isn't my area of expertise :-( so could you explain how
this works please? Is the theory that you find Barnard's star's position
where you are and extrapolate backwards to where it was when you left? If
so what is the terrestrial reference point?

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