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A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
Re: A beautiful night sky
From: David Pike
Date: 2026 Aug 31, 11:34 -0700
From: David Pike
Date: 2026 Aug 31, 11:34 -0700
Bearing in mind the degree of accuracy we can expect, I don’t think we need worry too much about a line through The Pointers not being exactly vertical. Thinking of Dube being on the tip of a pendulum pivoted at the pole, the vertical distance to be added to alt Dube to calculate latitude is a function of the cosine of the angle between The Pointers and the vertical. E.g. if the difference from the vertical is 5°, you would add on 99.6% of codec Dube. If the difference is 10°, you would add on 98.5% of codec Dube. DaveP
