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    Re: Lunars with SNO-T
    From: Alexandre Eremenko
    Date: 2004 Oct 25, 16:09 -0500

    Dear George,
    Thank you for finding the misprint in my table,
    and for your other illuminating comments.
    (I was surprised myself that averaging of such "so-so"
    observations miraculously gave zero error).
    I am posting the corrected table, including the
    rejected "blunder" observation which was not included in
    my earlier posting.
    Please notice: it was rejected BEFORE any reduction.
    I would always reject such an observation.
    I am waiting for your opinion whether my procedure was sound or not.
    
    AP: N 40d27.2'  W 86d55.8'
    GMT: 4:00 Oct 24, T=58F Pressure 29.75
    Observation from my balcony, height 12ft,
    Sextant SNO-T, index correction 0.0', inverting scope.
    One of the 6 observations (column 4) was immediately rejected
    because it did not follow the pattern of increasing
    distances. I reduced with Frank Reed's on-line calculator.
    First, each measurement, and then their average.
    The third line is the error in the distance, the fourth line
    is the error in the longitude:
    
    Moon-Altair:
    
    GMT   4:06:49    4:09:58     4:13:10  4:14:58   4:17:12    4:18:57
    DIST  51d22.2'   51d23.3'    51d23.8' 51d22.4'  51d24.1'   51d24.3'
    ERD       0.0'      +0.5'       +0.3'    -1.5'     -0.2'      -0.4'
    ERL      +0.3'     +13.5'       +8.7'   -44.0'     -7.3'     -12.2'
    
    After the rejection of column 4:
    AVERAGE GMT: 4:13:13  AVERAGE DIST: 23.54'
    ERROR IN DISTANCE: 0.0' ERROR IN LONG: 0.4'
    
    
    > It was Alex's lucky day.
    
    I understand this is not a compliment:-)
    I will try to repeat it today, thank God, the weather is
    perfect.
    
    Alex.
    
    
    

       
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