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    Re: Lunars and Longitude
    From: Richard Reed
    Date: 2010 Mar 26, 14:38 -0700

    Altitudes of two bodies ideally separated by about 90 degrees azimuth (bearing) is used independently of lunar distance to calculate position (Lon and Lat at the same time). GMT is required, most easily acquired from a chronometer.

    Lunars (two methods, Lunar distance and Lunar altitudes, if I understand correctly) are non-chronometer ways of getting time. Lunar altitudes involves a rough guess of GMT that gets progressively guess-corrected.

    Another way of getting position is a noon sight of the sun. Several sights are done to interpolate the exact GMT and altitude of local noon, and these give Longitude and Latitude directly.

    Sorry if I'm answering the wrong questions.

    Richard
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