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    Quartz article: reinstating celestial...
    From: Jackson McDonald
    Date: 2015 Oct 19, 07:46 -0700

    See photo. I'm not convinced that taking a sight through a glass window would be a good idea. Wouldn't the glass refract the image and introduce some additional error to the sextant reading?

    http://qz.com/ ... threat/

    Sometimes old school is best. In today’s US Navy, navigating a warship by the stars instead of GPS is making a comeback. The Naval Academy…


    Sent from my iPhone

    Ambassador (ret.) Jackson McDonald
    President
    Jefferson Waterman International

       
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