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    Re: lat/long from meridian passage
    From: Antoine Couëtte
    Date: 2011 Jan 24, 11:54 -0800

    http://www.fer3.com/arc/m2.aspx?i=115445
    [NavList] Re: lat/long from meridian passage
    From: goold---edu
    Date: 24 Jan 2011 13:12


    Dear Patrick,


    You are welcome !

    Thanks to data processing techniques which were not widely available some 30 years ago, it is now possible to shoot Heights ANYTIME around LAN (no more requirement for "paired sights" - which of course - work very well as you have seen ... ) and still get the best from your observations. This works well as long as you do not observe "too far away" from LAN.

    So if you want to give a try ...

    Best Regards

    Antoine M. "Kermit" Couëtte

    PS : As a regards the "not too far away from LAN rule" as applicable to plain parabola regression, do anyone know any numbers ? Obviously the smaller the zenit culmination, and the smaller the "permitted time" around culmination time ... but according to which numerical criteria ? Does anyone know on NavList ? Peter ? Andres ? I have not seen anything published, as far as I can remember ...


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