NavList:
A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
From: Hanno Ix
Date: 2009 Aug 6, 16:38 -0700
Brad: Thank you for the time and thoughts you spent on this. We both agree that - if it worked - this approach to find position/GMT by the difference between the times of culminations, i.e. DT, is only practical from land. But that itself would be rather desirable and probably quite within the technical means of a traveling ship. Frankly, I don't really know much about the kinematics of culminations of moving Heavenly Bodies. I suspect, though, that there might be significant deviations from a first order analysis. Even though these deviations might seem small for now, they might also end up a little cumbersome in practice because of the small size of the observed phenomenon itself - the movement of the moon. Nevertheless, the simplicity of the concept would make the approach attractive because it seems easy to understand and to remember. And applying some corrections is a common part of celestial navigation. So, it might perhaps end up useful - if it is correct!. So, let's submit this concept to further critique of the group members. Thanks again and regards H --- On Thu, 8/6/09, Brad Morris <bmorris@tactronics.com> wrote:
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