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A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
Re: Lunar distances
From: Nigel Gardner
Date: 2002 Jan 26, 6:03 AM
From: Nigel Gardner
Date: 2002 Jan 26, 6:03 AM
Further to my last note, I had forgotten that I have a copy of 'Cloudy Weather' Johnson's book 'Nautical Astronomy Made Easy' subtitled 'The solutions of the various problems being effected by a small table on one page. Designed to economise time and labour' He describes the lunars as follows:- ' The value of the Lunar Problem as an independent means of determining the Greenwich Time in case of an emergency being generally admitted, attention is invited to the very simple method contained in this book, in which it will be seen that nearly the whole of the computation is made by means of the same little Table, so that the distance may be cleared and the Greenwich Time found with the utmost ease and expedition' The trouble is that his methods rely on having a tabulated LD from the Nautical Almanac. NG