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    Re: Celesital Navigation Through Clouds
    From: Mike Burkes
    Date: 2009 Dec 20, 09:52 -0800
    Hi GL that and dates are cool with me. Keep me posted.
    Mike Burkes
    m_burkes@msn.com
    626-833-1521
     
    > Date: Sun, 20 Dec 2009 06:00:10 -0800
    > From: glapook@pacbell.net
    > To: navlist@fer3.com
    > Subject: Re: [NavList 11293] Celesital Navigation Through Clouds
    >
    > Here are my thoughts. I can rent a Cessna 172 at Santa Paula airport,
    > near Ventura California for about a hundred bucks an hour and we will
    > have to share this cost. It holds four people, one pilot and three
    > navigators. We fill all the seats and take off and fly out over the
    > ocean and take sights. You can bring your own bubble sextant and I can
    > supply a variety of bubble sextants, MA-1, MA-2, A-10A, A-7 and the
    > navigators can take a number of sights each using different instruments
    > if they choose. The navigator siting in the right seat can take the
    > sights while the navigators in the back seats can record data. We will
    > push the button on the GPS at the mid time of each sight so we can
    > determine the accuracy of the sights, the navigator with the worst
    > average buys the beer. Since the plane won't allow the navigators to
    > change seats in flight we will land at the Oxnard airport, right next to
    > the beach, to allow the navigators to change seats and a new navigator
    > to start taking sights. I estimate that it will take each navigator
    > about a half hour so the plane cost should be about fifty bucks each. It
    > may be possible to lower this cost somewhat if it is possible to take
    > sights from the back seats through the back window as this would
    > eliminate the necessity of landing to change shooters. I will try to get
    > out to the airport next week and see if it is possible to use a sextant
    > in back since I have never tried this before. If more than three
    > navigators are interested in participating we can switch out crews at
    > the Oxnard airport.
    >
    > I believe the best dates for this would be January 9-10; February 6-7;
    > or February 20-21 or possibly later in the year. We should plan on
    > flying on a Saturday and keep Sunday as a backup in case of bad weather
    > on Saturday. The reason I suggest these dates is that the sun and the
    > moon will both be visible with good cuts for daytime fixes.
    >
    > If anybody is coming from afar, the Burbank (BUR) airport is the most
    > convenient. LAX is a bit farther and Long Beach (LGB) is about as
    > convenient as LAX (it might not look like it on a map but a map doesn't
    > show the traffic coming from LAX on the 405 over the Sepulveda pass.)
    > Ontario (ONT) is also doable so shop for the best airfare. Things to do
    > in the area include Santa Barbara for wine tours, an hour drive up the
    > coast. San Diego is about a three hour drive down the coast or one can
    > take a train. You can go aboard the Star of India and the carrier
    > Midway. Long Beach for the Queen Mary and a Russian submarine. Near Long
    > Beach in San Pedro is the Lane Victory (a victory ship) and a good
    > maritime museum. One can also drive five hours and see Yosemite which is
    > beautiful in winter. A different five hour drive up the coast takes you
    > to San Francisco or you can take a train or fly.You can visit the
    > Pampanito submarine (SS-383) and several historic vessels including a
    > liberty ship, the Jeremiah O'Brien. A four hour drive from here is
    > Vegas, baby. There are plenty of flights from BUR to Vegas also. A three
    > hour drive takes you to Palm Springs. A two hour drive takes you to the
    > ski slopes.
    >
    > Did I mention that it was 77 degrees here today?
    >
    >
    > http://www.wunderground.com/cgi-bin/findweather/getForecast?query=93021
    >
    >
    > gl
    >
    >
    > frankreed@HistoricalAtlas.com wrote:
    > >
    > > Peter Monta, you wrote:
    > > "Wouldn't a UAV be the logical solution here? I'm not sure units with
    > > 40000ft capability are all that cheap yet, though. A very small
    > > payload might suffice for sun sights (small camera). Establishing the
    > > offset from UAV position to ship would probably come free with the
    > > overall control scheme to get the thing back, and the 2D offset would
    > > only be a mile or two anyway. Fixed wing might be best for smallest
    > > platform jitter when taking the sight."
    > >
    > > Nice! That's a very clever solution to the problem of the 40,000 foot
    > > mast. And if the sensor package is cheap enough (a camera and a radio
    > > with a ten-mile range?) then you could make them expendable and launch
    > > on weather balloons. The price of the balloon might turn out to be
    > > greater than the cel nav package. Whether that's more economical than
    > > a mini/micro-UAV or not would depend on the cost of the "toy plane"
    > > and the expected loss rate. In any case, a system like this means no
    > > sextant and no navigator holding said sextant, so it certainly takes
    > > the charm out of it, but at least it would still be real celestial
    > > navigation.
    > >
    > > -FER
    > >
    > > --
    > > NavList message boards: www.fer3.com/arc
    > > Or post by email to: NavList@fer3.com
    > > To , email NavList+@fer3.com
    >
    > --
    > NavList message boards: www.fer3.com/arc
    > Or post by email to: NavList@fer3.com
    > To , email NavList+@fer3.com


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