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    X-ray sextant
    From: Jackson McDonald
    Date: 2018 Feb 10, 12:39 -0800

    The March/April issue of Ocean Navigator magazine includes a short article by Tim Queeney about the development of a new celestial navigation system for use on voyages deep into our solar system and beyond.  Under development by NASA, the system is called Station Explorer for X-ray Timing and Navigation Technology (SEXTANT).   

    Queeney writes, "Instead of using visible light from stars, the SEXTANT idea makes use of x-rays coming from a special type of star called a pulsar that can be used like a set of radio beacons to get a fix position."

    Ballistic missile guidance systems have used light from stars for decades, but the novelty of SEXTANT is that it uses x-rays from pulsars, specifically from pulsars with highly stable x-ray emissions.

    Interesting concept.  I refer you to the article for more details. 

    JMcD

    28° 21.11’ N

    80° 43.45’ W

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