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    Ex-meridian sights - further question
    From: Russell Sher
    Date: 2001 Feb 12, 11:07 PM

    Hi Steve and thanks for the reply. That does make a bit more sense. By the
    way, according to the example in Nories on ex-meridian sights, the resultant
    LOP will not run due West-East but is offset by the difference LHA and 0
    degrees. Why is this since the sight is 'back-dated' (or pre-dated if taken
    before LAN) so that it represents the LAN altitude. Surely then the
    ex-meridian LOP should be a latitude? i.e. the latitude which should have
    been obtained at LAN. According to the examples the resultant latitude is
    just a point on the LOP. If this is true why bother with the ex-meridian
    correction??
    
    regards
    Russell
    

       
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