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    Azimuth of polar star
    From: Ronald van Riet
    Date: 2011 Jan 18, 08:41 -0800

    A slide rule (well not quite, but close enough to be called a slide rule) exists that was used to determine the azimuth of the pole star: the P.A.44 (http://www.rechenschieber.org/pa44.html web page in German).

    Does anyone know of a reason why the azimuth of the polar star is important enough to develop a dedicated slide rule for it?

    Also, they claim that with a half degree of latitude, a full degree of longitude and about five minutes time accuracy, the azimuth could be determined with a 1 minute of arc precision. Could that be a valid claim? It seems a bit too precise with the imprecise inputs...

    thanks

    Ronald
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