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A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
Re: Occultations of stars by the Moon
From: Lars Bergman
Date: 2023 Oct 24, 04:04 -0700
From: Lars Bergman
Date: 2023 Oct 24, 04:04 -0700
Geoff, looking at your Ladd Observatory numbers, I see that the differences between altitudes with and without refraction is around 37", which I guess is the refraction. At those altitudes I would expect a refraction of around 46" at the given temperature and pressure (based on The Star Almanac for land surveyors). Also, Regulus seems to have less refraction than the moon, in spite of Regulus' lower altitude.
Lars
