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Hi Robert,

I just happen to be hear so
----- Original Message -----
From: "Robert Gainer" 
To: 
Sent: Wednesday, August 04, 2004 4:05 PM
Subject: Re: Clarification of Question regarding LAN


> Chuck said,
> >The more traditional way of determining longitude was
> >to use a time sight at the time the sun crosses the
> >Prime Vertical (i.e., the time at which the sun is due
> >east or due west of you).  This procedure is described
> >in Bowditch and elsewhere.  It requires that you know
> >your latitude, which you can get from a noon sight or
> >from an observation of Polaris.
>
> Chuck,
> I don't understand how that will work. The magnetic variation and the
> latitude must be problems in that method. If you are at 23 degrees north
> latitude or greater the sun is never due east or west.  If you do not know
> the magnetite variation with some degree of accuracy wont that have a very
> large effect on the method? Is this practical at all?
> All the best,
> Robert Gainer
>
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