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    Re: Lunar with Davis MKIII Sextant?
    From: Brad Morris
    Date: 2019 Feb 20, 16:24 -0800

    Herman

    You can, of course, answer your question by exercising Frank's online calculator.

    Here is one example 

    SETUP
    DR Lat: 41° 22' N
    DR Long: 71° 58' W
    IC: 0
    Temp:50°
    Pres 29.80
    HoE 12 feet
    Body Sun
    ALTITUDES
    Body {leave blank}
    Moon {leave blank}
    LUNAR
    Date: 14 Feb 2019

    Time 0:0:0
    Distance 102° 57.4' far
    Ignore Oblateness
    Ignore Refractional Flattening
    RESULT
    Error in Lunar 0'
    Error in Longitude 00.6'
    [4 seconds of time per arcminute of longitude yields 2.4 seconds of time error]
    ------
    change distance to 102° 58.4' 

    Error in Lunar 1'
    Error in Longitude 30.1'
    [4 seconds of time per arcminute of longitude yields 120.4 seconds of time error]
    ------
    change distance to 102° 56.4'

    Error in Lunar -1'
    Error in Longitude 29.0'
    [4 seconds of time per arcminute of longitude yields 116 seconds of time error]
    ----------

       
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