NavList:
A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
From: Paul Dolkas
Date: 2013 Oct 13, 22:37 -0700
So if Lewis & Clark used a pan of water as an AH, did the early polar & Antarctic explorers do the same thing? I would imagine that the water would quickly freeze, but it would probably work even better then.
By the way – I found out that Raould Admusen used sextants for his journey, whereas Scott used a theodolite.
Paul Dolkas
From: NavList@fer3.com [mailto:NavList@fer3.com] On Behalf Of Frank Reed
Sent: Sunday, October 13, 2013 11:38 AM
To: paul@dolkas.net
Subject: [NavList] Re: An interesting question
"It may not be perfect but it sounds like we both think the Salt Flats to have appropriate topography for celestial.
I'm still trying to answer Lu's student's question. Where on earth, aside from bodies of water, is the surface appropriate for celestial."
Yes, I agree on salt flats. Frozen lakes can work the same way (if the surface is smooth enough --no compression ridges), but we have the same issue of contrast and questionable refraction. We already discussed lakes, so frozen lakes might not qualify as a separate category. :)
-FER
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