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Lu,
Is GPS navigation really available everywhere?
In particular in the Polar regions?
If not, what is the other reliable way of navigation in polar regions?

Alex.
________________________________________
From: NavList@fer3.com [NavList@fer3.com] on behalf of Lu Abel [NoReply_LuAbel@fer3.com]
Sent: Wednesday, March 04, 2015 8:51 PM
To: eremenko@math.purdue.edu
Subject: [NavList] Re: Status of Celestial Nav in 2015

Remember that this started as a discussion of why one would use celestial in 
2015.   Emergency navigation was given as one possibility.   I rather suspect 
that in the two examples given by Greg the explorer was using celestial as a 
primary means.   That begs the question of "why?"


      From: Greg Rudzinski 
 To: luabel{at}ymail.com
 Sent: Wednesday, March 4, 2015 4:46 PM
 Subject: [NavList] Re: Status of Celestial Nav in 2015

Alex,Sam Willis used celestial navigation on his trip down the Grand Canyon 
last summer. See link to BBC show that has Sam making observations using an 
artificial horizon.http://www.dailymotion.com/video/x2f1pxgGeoffrey Kolbe 
posted several years back on his North African desert celestial navigation 
using a bubble octant. http://geoffrey-kolbe.com/C-Nav/index.htmGreg 
Rudzinski
From: Alexandre Eremenko
Date: 2015 Mar 4, 22:00 +0000

 Greg,
you wrote:

> I would add remote wilderness travelers to the list of those that might find
celestial navigation a useful back-up to GPS.
> A plastic sextant such as the Davis MK 3 wouldn't add much weight to the pack.

You would add this to the the question or this is a part of an answer?

Do you know any people traveling in remote wilderness (on land) who are
using Cel nav, or carry sextants, almanacs, etc.?

I have never heard of such people in modern times.

Alex.





:
http://fer3.com/arc/m2.aspx/Status-Celestial-Nav-2015-LuAbel-mar-2015-g30568

   

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