NavList:
A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
Re: Longitude via lunar altitudes, simplified
From: George Huxtable
Date: 2007 Mar 12, 16:41 -0000
From: George Huxtable
Date: 2007 Mar 12, 16:41 -0000
From Peter's latest message- | | Frank wrote: | > Longitude by lunar altitudes is typically TEN TIMES less accurate than | > longitude by lunar distances. | | How have you calculated this, Frank? | ================ comment from George- I share Peter's doubt. While there's no doubt that using lunar altitutes will always give a reduced accuracy than lunar distances, and a factor of ten could indeed be possible under certain circumstances, I do not see how such a factor could be "typical". I hope Frank will explain further, or pehaps amend that claim. What "typical" value does he presume for a standard lunar-distance observation? George. contact George Huxtable at george@huxtable.u-net.com or at +44 1865 820222 (from UK, 01865 820222) or at 1 Sandy Lane, Southmoor, Abingdon, Oxon OX13 5HX, UK. --~--~---------~--~----~------------~-------~--~----~ To post to this group, send email to NavList@fer3.com To unsubscribe, send email to NavList-unsubscribe@fer3.com -~----------~----~----~----~------~----~------~--~---
