Two On A Big Ocean The Story of the First Circumnavigation
of the Pacific Basin
in a Small Sailing Ship


      

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Hal Roth
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Re: Lunars with SNO-T

From: Alexandre Eremenko (no email)
Date: Mon Oct 25 2004 - 22:46:20 EDT

  • Next message: Fred Hebard: "Re: Lunars with SNO-T"

    Here are more lunars with SNO-T.

    Oct 26, 0:0:0 GMT
    AP N 40d27.2', W 86d55.8'
    SNO-T, inverting scope, IC=0, T=61F, Pres: 30.04,
    height 12 ft, weather perfect. Frank's calculator.

    GMT 0:16:22 0:20:11 0:27:48 0:33:08 0:34:58
    DIST 70d37.4' 70d38.9' 70d41.8' 70d43.2' 70d43.8'
    ERDIST -0.2' 0.0' 0.3' -0.1' -0.1'
    ERLONG -6.6' -0.1' 8.4' 3.1' 3.3'

    AVERAGE GMT: 0:26:28
    AVERAGE DIST: 70d41.0'
    ERDIST: -0.1
    ERLONG: -2.1

    Comments. Longer time intervals indicate that I was more
    careful in my measurements than last time. Also I followed the
    advise to hold the sextant in the most convenient position:
    After catching the bodies close enough (without the scope,
    sextant upside down), I installed the scope and inverted my
    sextant so that the Moon was visible through the horizon glass.
    I had to use my intermediate filter (grey) to decrease the
    moon glare. The moon was very sharp with this filter.
    Without the filter, the star just disappeares when I bring it
    close enough to the moon.

    Alex.


  • Next message: Fred Hebard: "Re: Lunars with SNO-T"



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