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    Re: lunars with and without altitudes
    From: Frank Reed CT
    Date: 2006 Nov 30, 02:24 EST
    Fred you wrote:
    "The most thorough study of this was reported by Jan Kalivoda a few 
    years ago, from a German paper of the 1870s or so.  As I recall, the 
    standard deviation was around 0.25 to 0.3 minutes of arc.  So the 
    standard error of the mean of four observations would be about 0.15 
    minutes of arc rather than the 0.1 you claim.  That's pretty good 
    I don't know that we have any basis for calling it "THE most thorough study", though it's certainly "a" thorough study and certainly relevant. The results seem similar to E. J. White's lunars in 1889. It's an open question whether you can get a better sextant in 2006 than you could in 1875. I could imagine the answer going either way. <g>
    42.0N 87.7W, or 41.4N 72.1W.

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