NavList:
A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
Re: Fix by Occultations
From: Dave Walden
Date: 2009 Feb 5, 05:01 -0800
From: Dave Walden
Date: 2009 Feb 5, 05:01 -0800
See for example: A Manual of Spherical and Practical Astronomy By William Chauvenet, 1887 Available as a paperback reprint, or Google books: http://books.google.com/books?id=zHsAAAAAMAAJ&printsec=frontcover&dq=intitle:a+intitle:manual+intitle:of+intitle:spherical+intitle:and+intitle:practical+intitle:astronomy&lr=&as_brr=1&as_pt= At the end of the chapter on Longitude by Astronomical Observations, he writes: 262. By occultations of stars by the moon.-This method, which will be treated of in the chapter on eclipses, may be successfully used at sea, as the disappearance of a star behind the moon's limb may be observed with a common spy-glass at sea with nearly as great a degree of precision as on shore; but, on account of the length of the preliminary computations as well as of the subsequent reduction of the observation, it is seldom that a navigator would think of resorting to it as a substitute for the convenient method of lunar distances. In the referenced chapter, he gives 15 pages of details with examples. --~--~---------~--~----~------------~-------~--~----~ Navigation List archive: www.fer3.com/arc To post, email NavList@fer3.com To , email NavList-@fer3.com -~----------~----~----~----~------~----~------~--~---
