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A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
Re: Quartz article: reinstating celestial...
From: Geoffrey Kolbe
Date: 2015 Oct 19, 17:46 +0100
From: Geoffrey Kolbe
Date: 2015 Oct 19, 17:46 +0100
On Mon, Oct 19, 2015 at 3:57 PM, Jackson McDonald wrote:
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?
So long as both sides of the 'glass' window are parallel (or pretty close) then the light will come out of the glass at the same angle it went in - or close enough for government work....
Geoffrey
