NavList:
A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
Averaging
From: Doug Royer
Date: 2004 Oct 20, 15:19 -0700
From: Doug Royer
Date: 2004 Oct 20, 15:19 -0700
A few comments and questions. Fred, I'm glad to hear you did some sights from a moving vessel.I've been following your reports of the sights you take from dry land for some time.You do seem to "have it down" in the care you take and the accuracy you achive of those reductions.But it is a totally differant animal,a totally differant game,while taking cuts from a vessel or moving object.Especially on a small moving object. Did you average a number of altitudes/times on each of your sight sessions on board when you got 9.0 to 12.0 min of arc differance or just take 1 cut each session? Even so they're not all that bad a result in the real world if you've not had much experiance doing it in that environment. Jim, One of these times you're on the "lunch hook" and practicing try to use a short horizon in your sighting proceedure and practice working that out.It's interesting and may come in handy at sometime in the future. Is it your goal to become proficiant enough, or I should say comfortable enough, through practice and averaging to rely on a single cut of each object taken during a session to reduce for LOPs with confidance? Or do you believe even if you're at the confidance level you desire to still use averaging proceedures to gain the needed LOPs? Bruce, I really liked the angle of what you wrote about old time navigation practices/phylosophies yesterday.About not useing presant day ways of looking at things and useing them to explain the way it used to be viewed.That, to me, is an important point in not only navugation topics but others as well.
