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: Technique question


Subject: Re: Technique question
From: Steven Wepster (wepster@XXX.XXX)
Date: Wed May 21 2003 - 11:42:44 EDT


My reply was --

Oops. Thank you Fred, for your explanation. I should have paid better
attention.

Steven

>I sent this to Steven instead of the list, but thought it might be
>relevant.
>
>Steven,
>
>That was the interesting part of Doug's lunars. Although they were
>taken two hours apart, they were in opposite directions. However, the
>error in time was -513 seconds for the first and -490 seconds for the
>second, subtracting the known time from the lunar time. Thus there was
>a systematic error of around 5' of arc, in this case a gap. In the
>moon-Jupiter lunar, the moon was east of Jupiter, while for the
>moon-Spica lunar, the moon was west of Spica.
>
>Fred
>
>





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