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    Jupiters moons and time/longitude
    From: Francis Upchurch
    Date: 2014 Jun 7, 18:12 -0700

    Just got a wonderful 5 inch Newtonian reflector as a retirement present and plan lots of star gazing, including re-set my mechanical watch (grandads circ 1940) via Jupiter moons a la Cook et al Endevour. Tried it a  few years ago with a cheap 4 inch refractor ,but mostly minutes (time ) out). Anybody had any success and /or advice? I found lunars more accurate so far, but hope this better telescope may improve things? Obviously land based method, unless anyone has ideas re gyro stabalized mount for telescope? The thought had occured, bit like the various crazy chairs tested by the longitude board! Do you think the time may be ripe for another go at this?

    Francis

       
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