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    Sumner Line using Ex-meridians
    From: Greg Rudzinski
    Date: 2013 Nov 16, 16:09 -0800

    There has been discussion recently on the impossibility of a single celestial observation fix. Searching back in the archives found the late George Huxtable very eloquently criticizing the concept of a single celestial observation fix.

    http://fer3.com/arc/m2.aspx/ExMeridian-Exercise-Huxtable-dec-2010-g15001

    George suggested plotting ex-meridians using different assumed longitudes. The attached plot illustrates this with two ex-meridians using different assumed longitudes. Each ex-meridian latitude and assumed longitude can now be described as a point on a single Sumner line of position that exactly matches the azimuth/intercept line of position.

    So I think it is safe to say the single observation ex-meridian/LOP fix myth is busted. Byron will now have to return all those cokes ;-)

    Greg Rudzinski
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