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    Re: In Honor Of Jeremy Two Stars Full Lan's : One Upper And One Lower Culmination
    From: Peter Hakel
    Date: 2009 Sep 20, 14:29 -0700
    Hello Antoine,

    For this example I get:

    UT LAN: 16:32:30

    Vessel coordinates at 16:30:00 UT
    Latitude:    N 42 deg 08.4'
    Longitude: E   6 deg 53.7'

    This location is in the Mediterranean, west of Corsica and southeast of Marseille.

    I should point out that I included only data #1 through #6 in the calculation, since I was not sure how to interpret #7.

    Peter Hakel



    This first one occurred on Nov 16, 1979 on one of the then 2 French Navy Aircraft Carriers ( CLEMENCEAU or FOCH ? ) one evening when I was not flying my trusty F8E(FN) CRUSADER. It was almost by accident, as I noticed a few minutes earlier that Deneb would be full north of our vessel and I attempted to shoot it during the few minutes available.

    Date 16 Nov 1979
    Course 040° , Speed 22.0 Kts , Sea Current towards true direction of 050° at speed 0.5 kt
    Height of Eye 28 meters, Pressure and Temperature supposed to be standard
    DENEB is at the NORTH of the Vessel at its Upper Culmination
    The following data were then published in the French "Ephemerides Nautiques"
    Verse Ascension : 049°49.0'
    Declination    : N49°49'0
    Greenwhich Hour Angle of Aries at 16h00m00.0s was 295°07.9'

    All Heights already corrected for Instrument and Index Error. All times in UT

    #1 - 16h26m06.0s  86°50'8
    #2 - 16h28m02.0s  86°58'0
    #3 - 16h30m12.0s  87°03'3
    #4 - 16h32m31.0s  87°05'7
    #5 - 16h35m18.0s  87°04'0
    #6 - 16h38m43.0s  86°55'1
    blank line on purpose here
    #7 - 16h17m02.0s  85°54'3

    Give DENEB Transit time, i.e. DENEB being true North of moving vessel and vessel's position at time UT 16h30m00.0s . Any indication on FIX confidence is welcome.


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