NavList:
A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
Re: Rigorous v Approximate methods
From: Kieran Kelly
Date: 2003 May 15, 12:21 +1000
From: Kieran Kelly
Date: 2003 May 15, 12:21 +1000
I am attempting to write a paper on historical navigation methods using Lunar Distances and have come across numerous examples of sight reduction using a rigorous method as outlined in both Norie and Raper. However they do not say what is rigorous about the method and how it compares to the approximate methods also mentioned in both texts. I presume the texts are referring to solutions of the spherical triangles in the Lunar Distance reduction process but I am lost. Can someone direct me to material which explains the difference? Also I am trying to use graphical symbols in my paper sun as sun ll, moon ll but cannot find them in any program. Does anyone on the list have a set of symbols which I could use for incorporation in documents in a format compatible with a program such as photoshop. Regards Kieran Kelly kkelly@bigpond.net.au