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    Re: Photo sextant sights & Apps
    From: Don Seltzer
    Date: 2016 Sep 16, 08:36 -0400
    I have the Spyglass app on my ipad.  Confusing instructions, but I have used it for a few simple tasks, such as measuring the grade of a road and estimating a few structural heights.  I'd guess that accuracy was on the order of a quarter of a degree.
    The navigation claim is nonsense.

    Don Seltzer

    On Fri, Sep 16, 2016 at 3:38 AM, Andrés Ruiz <NoReply_AndresRuiz@fer3.com> wrote:
    I am still interested in Photo sextant sights, while I am searching about orthophotos, I found this App.
    Has anyone used this application?
    Sounds well, but it seems that is not true...



    TRACK STARS, SUN AND MOON & NAVIGATE BY STARS
    Track positions of stars, Sun and Moon with arc second precision – use them as a reference to calibrate compass for maximum accuracy.

    SEXTANT, ANGULAR CALCULATOR AND INCLINOMETER
    Find out heights of objects and distances to them – measure visually and calculate dimensions and distances. 

    CAMERA
    Take pictures overlaid with all available GPS, positional and directional data.


    Regards,
    --
    Andrés Ruiz
    Navigational Algorithms
    http://sites.google.com/site/navigationalalgorithms/

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