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    Re: Time sight primer
    From: David C
    Date: 2019 Sep 26, 21:05 -0700

    Frank Reed wrote

    No problem. Instead of calculating the azimuth, you can just run the time sight math a second time with a slightly different input latitude. That gives you two lat/lon pairs, and you draw your LOP through those two points.

    Which is one half of a Sumner. Repeat with another lat/lng pair and you have s seconde LOP.  The end result is the same as  the St Hilaire method even though it isn't a St Hilaire.

    A query -  was "Sumner" included in the term "New Navigation" or was the latter just the St Hilaire?

       
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