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A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
Re: A noon sight conundrum
From: Herbert Prinz
Date: 2003 Nov 24, 10:24 -0500
From: Herbert Prinz
Date: 2003 Nov 24, 10:24 -0500
Peter Fogg wrote: > As best I understand it, he is saying that the > rate of change is smaller than the units we are using - ie, one tenth of a > minute of arc? Any chance of more detail about this? Yes, Peter, you understood the principle correctly. Except that the unit (= resolution of the azimuth table) is 0.1deg, not 0.1' as you say. The sun needs 24s to move 0.1deg in LHA. The change in azimuth in the course of a whole day is on average the same. But it will usually be faster at noon and can be considerably slower (even zero) at other times. Herbert Prinz