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    Pave Diagram / veater Diagram
    From: Zvi Doron
    Date: 2004 Mar 24, 21:21 -0000

    Hello,
    
    Weems in his book Air Navigation (British Empire Edition) page 332 shows a
    Fave Diagram, apparently similar to a Veater Diagram (??) which "offers a
    general solution of the spherical triangle by superposing curves of
    declination, altitude, hour angle and azimuth on a mercator projection
    chart".
    
    The image shows a square grid with two intersecting sets of curves, I
    suspect LHA (t) and dec (D), against axes of Alpha (vertical) and Betha
    (horizontal). I suspect Betha is the Azimuth which is read differently
    depending on 3 different Lat and Dec relationships
    
    Does anybody have a clue how these diagrams are used to derive Alt and Az
    from LHA, Dec and Lat?
    
    Thanks
    
    Zvi
    
    
    

       
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