NavList:
A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
Re: Home made level vial observation results & Amundson at the So. Pole
From: Marco Costa
Date: 2012 Feb 18, 11:32 -0800
From: Marco Costa
Date: 2012 Feb 18, 11:32 -0800
Mercury freezes at -37.89º F, from meteorological data the average temperatures in December at the South pole is reported between -20.7º F to -15.7ñ F with max of +9.9º F.
I agree that the AH in the famous photo appears to be a glass one, but the temperature only should not have precluded the use of a mercury one.I do not know what was the temperature at the precise time the photo was taken.
Marco
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