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    Re: Back In Hobby: Some Questions, Please
    From: Ken Muldrew
    Date: 2007 Apr 27, 15:26 -0600

    On 27 Apr 2007 at 10:59, Alexandre E Eremenko wrote:
    > But the errors in LATITUDE are enormous by comparison:
    > 48', 6', 0', -1', 5', 5', 11', -2', -9', 0, -2', +4',
    > This is not what I would expect from artificial
    > horizon observations, even with a poor sextant.
    > Even if we discard the 2 outliers (possibly some blunders)
    > the average absolute error is 3.4' which is too large.
    > Is it possible that some poor quality wood octant was used
    > for the altitudes, and a metal sextant for the lunars?
    No, he clearly states that he only has the one, metal sextant with him on
    that trip. It may have been a problem with his artificial horizon (non-
    parallel glass, for example) or else he just missed the noon sight due to
    the demands of his party. I have no other explanation for why his
    latitudes were so poor.
    Ken Muldrew.
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