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    Re: Star-sight discrepancy
    From: Fred Hebard
    Date: 2005 Aug 25, 17:38 -0400

    On Aug 25, 2005, at 5:23 PM, Fred Hebard wrote:
    
    > On Aug 25, 2005, at 5:09 PM, Bill wrote:
    >
    >> Wouldn't a star also have a brief
    >> period--relative to its declination/observed altitude--where change in
    >> observed altitude appeared to stall while it makes its meridian
    >> passage?
    >
    > Yes.  A principle means of establishing latitude on land, where a plumb
    > bob or spirit level can be used to establish one's "horizon."  At sea,
    > with only a short time at twilight when both the real horizon and stars
    > are visible, tough to find a star undergoing meridian passage (and
    > wasting time better spent obtaining a 3-point or 4-point fix).
    >
    >
    >> Now that you mention it, I do recall your post.  I apologize if not
    >> remembering it, or including it in my response to T, was perceived as
    >> a
    >> slight. When I mention the gurus, I do include you on my list.
    >
    > Without trying to speak for George, I didn't get the impression that he
    > felt slighted, rather delighted to once again share his erudition, much
    > to our benefit.
    >
    > Fred
    >
    >
    
    Oops.  I believe by timing the actual moment of meridian passage,
    longitude also can be determined, but I'm getting far out of my depth
    here.
    
    
    

       
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