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    Re: Exercise #16 High Altitude Sights near Noon
    From: Hewitt Schlereth
    Date: 2008 Jul 21, 11:30 -0400

    Jeremy -
    
    Wow, 10' zenith distance sights are really up there. I once did one at
    20' and that had me dancing a complete circle around the cabin top of
    a 46-foot ketch.
    
    Thanks again for giving a notion of what a CG celestial exam question
    looks like.
    
    Hewitt
    
    PS Would the CG allow a bow-compass in an exam? I've used one for
    years in routine plotting because it makes a pencil line on the sheet
    instead of a dent.  H
    
    On 7/21/08, Anabasis75@aol.com  wrote:
    >
    > H
    >
    >
    >
    > I've long been curious to discover just how close one could come with
    > the super-basic method of advancing arcs or circles position at the
    > standard Universal Plotting Sheet scale, which is why I was glad to be
    > presented with Jeremy's example from a CG exam.
    >
    > Thanks again,
    >
    > Hewitt
    >
    >
    > Hewitt,
    >
    > If you look through my navigation notebook from the TS TEXAS CLIPPER, there
    > are at least 2 high-altitude sun sights.  Unfortunately at that time, I did
    > not know about the methods of taking 2 shots a few minutes apart and didn't
    > do intersecting circles.  If my memory serves me, the Z-distance was about
    > 10 nm, which actually was quite a hindrance to try and get position better
    > then that.
    >
    > Andres "cheated" a bit with the problem as he used a computer which
    > certainly wouldn't be allowed in the exam room, but it does show how the
    > circles work when reduced at sea.  I haven't had the chance to shoot any
    > high altitude sun sights lately, but I will be mindful when I am at sea and
    > will try to get some if it is possible.
    >
    > Jeremy
    >
    >
    >
    > ________________________________
    > Get fantasy football with free live scoring. Sign up for FanHouse Fantasy
    > Football today.
    >  >
    >
    
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