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A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
Re: A C Gregory Lunar Distance
From: Bill Noyce
Date: 2003 Jul 28, 09:50 -0400
From: Bill Noyce
Date: 2003 Jul 28, 09:50 -0400
Very interesting reading!
Gregory's lunar ultimately showed that his chronometer was
slow by nearly 14 minutes, as I understand. If he expected
that result, then perhaps he was correct in picking a Mars
polar distance from a bit later in the day than his chronometer
indicated. In any case, it doesn't look like it contributes
much error to the LMT calculation.
Thank you, and George, for the explanation of Raper's
method of reducing the lunar with logs.
-- Bill
