NavList:
A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
Re: Northing correction to Noon longitudes.
From: George Huxtable
Date: 2005 Jun 8, 12:02 +0100
From: George Huxtable
Date: 2005 Jun 8, 12:02 +0100
Henry Halboth wrote- >It all seem unnecessarily complicated. Within the appropriate time range, >why not calculate a series of ex-meridian Latitudes for specific times >and advance each to the time wanted, as the hydrographical surveyors did, >and have the thing over with. I believe that Frank said at one time that >he had a copy of Wharton + Fields book on hydrographical surveying, in >which, if my recollection is correct, the matter is dealth with quite >fully ================ I can see how the procedure Henry describes would give a value for latitude, but I don't see how you get longitude that way. Perhaps Henry will provide a bit more detail for those of us who are slow to take such things in. George. ================================================================ contact George Huxtable by email at george@huxtable.u-net.com, by phone at 01865 820222 (from outside UK, +44 1865 820222), or by mail at 1 Sandy Lane, Southmoor, Abingdon, Oxon OX13 5HX, UK. ================================================================