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    Re: Quartz article: reinstating celestial...
    From: Francis Upchurch
    Date: 2015 Oct 20, 03:47 -0700

    Replying to my own last post!

    If we had homemade sextants, watches and basic self generated sun dec and EOT tables, + home made reflector telescope and Jupiter moon tables (for correcting the watch on land in distant parts), then we would have nearly a "self contained" cel nav system.

    I say "nearly", because we would still need accurate charts, without which, knowing lat and long is a bit pointless.

    I've no idea how you could have good worldwide accurate charts without the cast of hundreds/thousands you have already hinted at.

    So for me, it is the charts that are the  impossible thing for the lone navigator to be truely "self sufficient".

    Oh well.

    Still good fun.

    Francis

       
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