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    Re: Suitable Sextants - Mirrors
    From: Herbert Prinz
    Date: 2005 Oct 14, 19:33 -0400

    Joel Jacobs wrote:
    
    > Thank you for your long and detailed explanation which I am way too
    > old to have any interest in [... cutting the rest of the rhetorics ...
    > ] I would like you to point me to some books on navigation that
    > substantiate your group's points of view since many of us learned our
    > navigation, not as academicians, but as seamen.
    
    How about Chauvenet, A Manual of Spherical and Practical Astronomy,
    Philadelphia, 1863, Vol 2. Ch.4, Item 91, p103-104, for starters. This
    must have been fresh out of the printing press when you were young.
    
    By the way, I am deeply embarrassed to find out that in my last post I
    was only regurgitating what others have already elaborated in great
    detail. When I just read in Chauvenet, loc. cit. about the navigator
    "turning on his heel" (when swinging the arc) it rang a bell. Sure
    enough, on searching the list archives I find that Alexander Eremenko
    has posted a text by Maskelyne that says the same thing, and provided an
    analysis. Also Frank Reed has criticized Bauer in nearly the same words
    that I used, picking on the same passage. Apologies to all, sometimes
    it's difficult to remember what has been discussed on which forum. I
    withdraw from this discussion because everything that can be said is
    already in the archives.
    
    Herbert Prinz
    
    
    

       
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