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    Re: Lunars.
    From: Steven Wepster
    Date: 2001 Jul 13, 8:30 AM

    Dear Herbert,
    
    Thanks for poiinting this out to me. I'll go after an 1909 Bowditch...
    _Steven.
    
    > Dear Nigel and Steven,
    >
    > It find it hard to understand how the concept of "cheating" would apply to taking
    > a lunar distance. LDs were and are not a sport, but rather a method of solving a
    > technical problem with any tool available. Presetting the sextant was not only
    > permissible, but in fact common practice. Not only did it save the trouble of
    > moving the star across the sky diagonally, but it also helped with the body's
    > identification. See, for instance, what Bowditch, American Practical Navigator,
    > 1909 (or similar editions), Appendix V has to say on the subject.
    >
    > The LD was not a method to find time and longitude out of the blue. It rather
    > provided a corrective to an erroneous chronometer. By checking the latter
    > regularly against LDs, time was always known to a reasonably good degree of
    > accuracy.
    

       
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