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    Technique question
    From: Doug Royer
    Date: 2003 May 19, 12:30 -0700

    I have a couple of technique questions about Lunar observations for you
    guys.Mr. Hebard wrote something that got me wondering.Let me give you the
    observation conditions of the last 2 attempts.On 05-11 and 05-17 there was
    an atmospheric condition (high,thin layer of fog) that fogged the images of
    the bodies under observation.The edges of the Moon were clear but had a
    corona type of fuzziness about it.The images of the planets and stars
    observed were the same but because of the smallness of the bodies not as
    pronounced.I used the 6x scope on the sextant and it looked as if the images
    were in coincidence.However,maybe they weren't after reading the posts this
    morning.The altitude observations taken at these same times appear to be
    close to what they should be.The horizon was uneffected by the fog as it was
    high in the atmosphere and when the bodies were brought down to it sharp in
    the scope.I have confidence in the altitudes because I am used to doing them
    and feel there is little observer error in them.However,the sights of the
    distances may have an observer error due to inexperiance in useing the
    sextant in the positions needed to take the angles of the distances.My
    question is mainly about the images under the conditions and if that could
    lead to further reduction of accuaracy not including the observer
    error?Under what atmospheric conditions do you guys usually attempt Lunar
    observations?
    I have data from 05-17 but will try clearing it before posting it to compare
    the final output with what you guys will come up with.I also have to clear
    the data from last week and post my times for critique.
    
    
    

       
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