NavList:
A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
Newbie Question - Parallel LOPs
From: Mark Waters
Date: 2009 Jan 28, 00:08 -0800
From: Mark Waters
Date: 2009 Jan 28, 00:08 -0800
I've recently taught myself Celestial Navigation from library books but I still have some newbie questions. I thought I was doing fairly well using an artificial horizon - accuracy to within 6NM last week - but today after taking sun sights at 10.00 and 14.00 all my LOPs ran parallel. I reduced 8 different sights and double checked everything but the same result. I had read that a 4 hour spread would be enough but today my LHAs and Zn's all came out similar. My DR Long is 121W. I can only deduce that taking sights of the sun at a similar altitude at 10.00 and 14.00 caused the LHA to be too close despite 4 hours time difference? Is this correct and will this always occur taking sights at this time if not moving? Excuse the naivety but like I said I am still a beginner. Many thanks, Mark --~--~---------~--~----~------------~-------~--~----~ Navigation List archive: www.fer3.com/arc To post, email NavList@fer3.com To , email NavList-@fer3.com -~----------~----~----~----~------~----~------~--~---
