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    Fwd: A very basic CN question for you
    From: Andrés Ruiz
    Date: 2011 Dec 13, 21:15 +0100

    Fred, You are in NavList!!!!


    ---------- Forwarded message ----------
    From: Andres Ruiz <navigationalalgorithms@gmail.com>
    Date: 2011/12/13
    Subject: Re: A very basic CN question for you
    To: fred-n-sandy@tdsn.net


    Dear Fred,

    Welcome to the fantastic world of celestial navigation!

    With the little information you have give me, the problem could be that you are using:
    • Hc as input instead Hs. (See my papers at my Web site).
    • Other time different than UT1/UTC/GMT; GPS time, ...

    Attached is an example simulated from your location at Texas. Try it!!!

    If you want to learn celestial navigation, NavList is a nice place to be.

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



    2011/12/13 Stevens <fred-n-sandy@tdsn.net>
    Andres:

    I am trying to learn celestial navigation and am confused
    about something that I have noticed, which is this:

    If I take my GPS coordinates and verify them with Google
    Earth, then input them into the Nautical Almanac program at
    the USNO, I get a data table for the time that I input for
    celestial objects. If I then take that data for, in this
    example, Polaris and Jupiter and plug those values into the
    formulae (and programs) that are designed to give me my
    location, the resultant position is always different than my
    original GPS coordinates.

    Why? What am I missing?

    Thanks,
    Fred
    Sanger, TX
    33* 21.96' N
    97* 14.1' W



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

    File: 117598.simulated-example-tx.zip
       
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