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    Re: Chihae, Korea Lunar
    From: Mike Burkes
    Date: 2008 Nov 14, 17:01 -0800

    Hi again Jeremy, I graphed your shots and they were quite scattered
    but I did notice 3,4, and 5 were nearly st. line. My average yielded
    GMT 08-04-48 and Lunar GMT yielded 08-03-03 a 1m 45 sec difference and
    00.8' error. I suspect the proper method would involve determining the
    slope Ds over GMT and moving that line amidst the scatter to determine
    line of best fit. I will try that next and thanks for input!
    Mike Burkes
    On Nov 13, 1:37�am, Anabasi...@aol.com wrote:
    > Hello all,
    > Fortune has not been kind to me this trip in the navigation �department. �The
    > ship is stuck in Chinhae, ROK at the moment and so I won't �likely be getting
    > any Celestial navigation in anytime soon. �The haze and �often cloudy weather
    > this time of year will hamper even my lunar efforts. � Fortunately, we face
    > south, so there was a nice opportunity to shoot a set of �lunars the other day.
    > �Here is the data for those who want to play with the �number.
    > �As a side bar, without everyday Internet access, I am relying on �Arthur
    > Pearson's spreadsheet to run the calculations. �I have Bruce �Starke's tables
    > with me, but I have been too busy to dedicate the time required �to reduce with
    > them.
    > Chinhae Lunar
    > Sun to Moon (near limb obviously)
    > Position: Lat 35 deg 6.4' North
    > � � � � �Long 128 deg 41.3' �East
    > Date: 5 November 2008 (ZD -9)
    > Index error 0.7' on the arc
    > Ds � � � � � � � � Local Time of sight
    > 80 deg 05.6 � �1701-41
    > 80 deg 06.9 � �1702-39
    > 80 deg 06.8 � �1704-09
    > 80 deg 06.0 � �1704-51
    > 80 deg 05.2 � �1705-25
    > I'm afraid it's not a very good "grouping" but given the low altitude of �the
    > sun and haze, it was hard to get the shades correct for a good arc and there �
    > might have been some non-standard refraction as well. �My straight �averaging
    > of Ds and time gave me a GMT of 08h 4m 55s with an error of 1min 11 �seconds
    > fast (0.5' error in observation). �I hope other reduction methods �are at
    > least close.
    > Jeremy
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