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A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
Re: Captain Cook & celestial navigation
From: Robin Stuart
Date: 2020 Feb 2, 10:26 -0800
From: Robin Stuart
Date: 2020 Feb 2, 10:26 -0800
John Howard you wrote:
"...lunar distance "seen" would be different because it still would have paralax and refrection and corner cosine and etc. but the cleared, geocentric distance would be the same?"
Correct. Clearing lunar distance sights involves computing the geocentric lunar distance from your sights. All observers will agree on the geocentric lunar distance. It would make little sense to do the extra work and convert to topcentric lunar distances for Greenwich, England as the article implies.
Robin Stuart
