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    Re: Lunar eclipses and other things
    From: Herbert Prinz
    Date: 2004 Oct 30, 03:11 -0400

    [I have sent this before, yesterday, but it seems to have been lost. I apologize
    in advance if the old message resurfaces and causes a duplication.]
    
    Wolfgang,
    
    I just learned through your question that the name "armillary sphere" can also
    be applied to an instructional device. But here we were talking about an
    observation instrument. See this web site, which has a good description and
    pictures of both type:
    
    http://www.hps.cam.ac.uk/starry/armillmaths.html
    
    Wolfgang K?berer wrote:
    
    > I always thought that the armillary sphere is a model of the Ptolemaic
    > system; its only use was to demonstrate the celestial spheres and the
    > "workings of the heavens". That seems to be a somewhat different task than
    > that of a star globe. But correct me if I`m wrong.
    
    
    

       
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