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    Re: The End of Celestial Navigation??
    From: Greg R_
    Date: 2008 Jan 4, 00:57 -0800

    > Which is generated using *electronic* computers.    Darn, where are
    > those 19th century logarithm tables when we need them!!  :-P
    
    The purists among us would probably insist on using Napier's Bones to
    do the calculations....  ;-)
    
    --
    GregR
    
    
    --- Lu Abel  wrote:
    
    >
    > Fred Hebard wrote:
    > > On Jan 2, 2008, at 2:07 PM, Lu Abel wrote:
    > >
    > >
    > >>
    > >> Greg R. wrote:
    > >>
    > >>> --- frankreed{at}HistoricalAtlas.net wrote:
    > >>>
    > >>>
    > >>>
    > >>>> What do you think he's talking about?
    > >>>>
    > >>>>
    > >>> Obviously someone who hasn't had a major electrical/electronics
    > >>> failure
    > >>> while out on the open ocean...  ;-)
    > >>>
    > >>>
    > >> Would that include my quartz crystal controlled watch?
    > >>
    > >> I truly believe in the adage that a good navigator has two or more
    > >> sources of positional information available.   And only a fool
    > >> would go
    > >> offshore with a single GPS set, even if it were integrated into
    > the
    > >> fanciest electronic charting system.
    > >>
    > >> But I can't figure out why the "can't trust electronics, gotta use
    > >> celestial" crowd seems perfectly happy with electronic
    > chronometers
    > >> (synchronized, of course, by listening to WWV or BBC), and perhaps
    >
    > >> even
    > >> reducing their sights using a calculator.   Those electronics are
    > >> subject to exactly the same failure modes as GPS sets.
    > >>
    > >
    > > The answer leads us back to the subject: lunars.  Of course you
    > have
    > > to trust the Nautical Almanac, but....
    > >
    > > Fred Hebard
    > >
    > Which is generated using *electronic* computers.    Darn, where are
    > those 19th century logarithm tables when we need them!!  :-P
    >
    > >
    >
    
    
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