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Frank,

I'm not sure I understand your question, but if you
are looking for a reference to Tom Metcalf's paper, it
is

"On the Overdetermined Celestial Fix"
NAVIGATION
Vol 38 No 1
Spring 1991
pp 79-89

Perhaps you can find it in the library at Mystic.

Tom used to be a contributor to this list 'way back
when', and I got my copy directly from him. He is or
was on the faculty at the University of Hawaii at
Manoa.

Members of the Institute Of Navigation (ION) can view
the article online at

http://www.ion.org/search/search_journals.cfm

Non-members can purchase a copy for $25.

Best regards,

Chuck Taylor
  47d 56' N
 122d 11' W

--- Frank Reed wrote:

> Herbert Prinz quoted Andres Ruiz:
> > *2.  Position from n circles of equal altitude*
> >
> > Here the problem is  there are a lot of crossings
> between the circles.
> > Metcalf & Metcalf,  (On the overdetermined
> celestial fix - Refer to the
> > Bibliography section  at the link below),
> developed a method based on
> > Lagrange Least-Squares  minimization of the
> equation:
> >
> > S ( Sin Ho ? [ sin Dec sin Lat +  cos Dec cos
> Lat cos(GHA+Lon) ]^2 )
> >
>
> I didn't receive this message  and there's no
> evidence of it in the irbs
> archive that I can find --possibly it  was a private
> message-- but I would be
> interested in receiving a copy. Could  someone
> forward a copy to me? Thanks.
>
> -FER
> 42.0N 87.7W, or 41.4N  72.1W.
> www.HistoricalAtlas.com/lunars
>


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