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    Re: Latitude of prime vertical sight
    From: Peter Fogg
    Date: 2007 Aug 1, 09:12 +1000


    Paul.Lee wrote:
    > "I'm new to navigation, and am doing some work on the usage of prime
    > vertical sights. I know it gives longitude, but if you knew the time
    > of sunrise, is it possible to obtain a value for lattitude too? "
     
    How would you derive latitude from a time for sunrise, Paul? I suspect that it could give a rough indication, but what advantage would this method propose?
     
    Don't forget that due to refraction, measured sights of bodies close to the horizon can be unreliable.

     

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