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A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
Re: Fw: Chichester's Calculations ( Sine-Cosine method)
From: Hewitt Schlereth
Date: 2008 Dec 15, 11:49 -0400
From: Hewitt Schlereth
Date: 2008 Dec 15, 11:49 -0400
Thanks, Gary and Yay for Capt. Phil! His time-sight method is what I carried for backup after I got my Tamaya NC-2 and before I had my cut-down of 229. Weems was quite a pioneer in developing simplified methods of sight reduction. I wonder why he isn't mentioned much these days. -Hewitt On 12/15/08, Gary J. LaPookwrote: > I am attaching an example of the same computation done with Weems Line > Of Position Book which provides the shortest solution of all the tabular > methods. This requires only three entries to the tables to find Hc and > then the azimuth is found by Rust's diagram. The example requires only > two pages because two of the values are found on one page. See attached > files. > gl