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A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
Re: Old style lunar
From: Ken Muldrew
Date: 2004 Dec 13, 10:47 -0700
From: Ken Muldrew
Date: 2004 Dec 13, 10:47 -0700
On 13 Dec 2004 at 12:28, Fred Hebard wrote: > I believe Alex is correct about this. First, assume the errors are in the > RA not the declination, which is reasonable (and that the positions of the > stars are accurate). Essentially, the almanac puts the moon too far along > in it's orbit or not along far enough. If it's too far along, it will be > closer to the star in the east and farther from the star in the west. Thus > the error in the eastern distance will be of opposite sign from that of the > western distance, but both distances will give a time that is greater than > the correct time. OK, I get it now. Thanks for the explanation. Ken Muldrew.
