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    Re: Celestial Navigation Through Clouds
    From: Bill Morris
    Date: 2009 Dec 21, 13:44 -0800

    A Macneil All-weather sextant by Hughes and Son, ca. 1930, is illustrated on page 120 of Peter Ifland's "Taking the Stars." It used a photocell at the focus of a concave mirror to centre a cloud-obscured sun.

    Bill Morris
    Pukenui
    New Zealand

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