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    Re: Circle of reflection
    From: Nicol�s de Hilster
    Date: 2009 Mar 06, 15:11 +0100

    Andres Ruiz wrote:
    >
    > I am interested in the use of the Circles of reflection _at sea_.
    >
    > Any information would be welcoming
    >
    You might want to check the following works:
    P. Ifland "Taking the stars" contains a whole chapter (pp. 135-139) and 
    many 'loose entries' on circles
    W.E. May "A History of Marine Navigation" (p. 145)
    C.H. Cotter "A History of the Navigator�s Sextant" (p. 147)
    
    They all credit Johann Tobias Mayer for the reflective circle although 
    they mention varying dates (1752 - 1758). According to May, Mayer made 
    his circle to support his tables for lunar observations which he had 
    made in 1752.
    
    Nicol�s
    
    
    
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