NavList:
A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
Re: New discussion thread topics?
From: Doug Royer
Date: 2004 Feb 11, 17:53 -0800
From: Doug Royer
Date: 2004 Feb 11, 17:53 -0800
Kieran, I also tried to have discussions about terrestrial nav. techniques in the past but the threads peter out fast.Although what I was discussing had more to do with map reading and useing a lensatic compass and clinameter while your discussion topics were celestial in nature.I found them interesting and informative.My glass reflective AH I built stems from your topic of useing tea and such in an AH.That was a damn interesting thread topic.So,at least some good came of it. I know nothing about the technique you state below to determine magnetic variation.It sounds interesting.I would like to learn and would benefit by a discussion on the matter.I would like it if you or someone could start by explaining how one would use the instruments and tables to accomplish this.Is it similar to finding the compass error useing amplitudes?One doesn't need a sextant to do that.Start with the basics and we'll go from there.This is what I joined the list for!To be exposed to and learn new ideas. The subject of the polynesian accomplishments,I believe,would be a great topic to discuss.I don't know much about the subject but would be willing to read about it onlist. I've noticed lately some list members aren't posting.Is it no interest in the subject?Boredom with the subject thread?Are they busy doing other things?Some of the items discussed lately were interesting to a few of us but had no bearing on navigation per say. Could you start your the topic of Mag. Var.? -----Original Message----- From: Navigation Mailing List [mailto:NAVIGATION-L@LISTSERV.WEBKAHUNA.COM]On Behalf Of Kieran Kelly Sent: Wednesday, February 11, 2004 16:23 To: NAVIGATION-L@LISTSERV.WEBKAHUNA.COM Subject: Re: New discussion thread topics? Doug, I have tried to get interest going since joining the list in terrestrial navigation eg use of sextants, artificial horizons and lunar distance observations on land. It has often been a very lonely occupation except for the reliable enthusiasm of George Huxtable in all things navigational and astronomic. One thing of particular interest to me that has never even raised a murmur on the list is the use of sextants, compasses and amplitude tables to determine mag var. 19th Century explorers journals in Australia at least were full of this calculation which was interesting and exacting. Norie, Raper et all spent some time on it and it is relevant today. On the list - silence. In relation to the Polynesian navigators there have been some great books written. Regards Kieran Kelly Sydney Australia -----Original Message----- From: Navigation Mailing List [mailto:NAVIGATION-L@LISTSERV.WEBKAHUNA.COM]On Behalf Of Royer, Doug Sent: Thursday, 12 February 2004 5:28 AM To: NAVIGATION-L@LISTSERV.WEBKAHUNA.COM Subject: New discussion thread topics? All,looking back over the archives I've noticed some areas of the art and science of navigation haven't been discussed by the group at all. 1. Emergency or lifeboat Navigation 2. Traditional native ocean or terrestrial navigation 3. Space navigation 4. Subsurface navigation Is there any interest in the above topics? Are there other topics that would interest listmembers?
