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    Re: H.O. 229/249: publication dates
    From: Greg R_
    Date: 2011 Mar 24, 13:44 -0700

    According to The Institute of Navigation website, H.O. 249 was first issued
    in 3 volumes in 1952:
    
    http://www.ion.org/search/view_abstract.cfm?jp=j&idno=1939
    
    Title: H. O. 249 REVISED
    
    Author: John Dohm
    
    Issue: Vol. 3 No. 3, 1952
    
    Page(s): 93 - 94
    
    Cite this article: Dohm, John, "H. O. 249 REVISED", NAVIGATION, Vol. 3, No.
    3, Fall 1952, pp. 93-94.
    
    Abstract: The first volume of the long-awaited revision and expansion of
    H.O. Publication No. 249, Sight Reduction Tables for Air Navigation,
    containing computed altitudes and azimuths for 34� selected stars and the
    bodies of the solar system, has been issued by the Hydrographic Office.
    
    Volume 1 is a revision of the Star Tables for Air Navigation, conceived and
    designed by Commander C. H. Hutchings, USN, and first published in a
    preliminary edition in 1947.
    
    In addition to the Star Tables, two more new volumes, providing complete 
    data for the reduction of sun, moon and planet sights, are to follow. Volume 
    2 will cover latitudes O�-39� north and south, and Volume 3 latitudes 
     40�-89� north and south.
    
    --
    GregR
    
    
    
    
    

       
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