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Quartz article: reinstating celestial...
From: Jackson McDonald
Date: 2015 Oct 19, 07:46 -0700

See photo. I'm not convinced that taking a sight through a glass window would be a good idea. Wouldn't the glass refract the image and introduce some additional error to the sextant reading?

http://qz.com/ ... threat/

Sometimes old school is best. In today’s US Navy, navigating a warship by the stars instead of GPS is making a comeback. The Naval Academy…

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Ambassador (ret.) Jackson McDonald
President
Jefferson Waterman International

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