A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
From: David Pike
Date: 2018 Jan 13, 00:02 -0800
David Fleming wrote: Increaseing shadow length will not improve the accuracy. As has been noted the accuracy is limited by the sun not being a point source of light.
I think we’re talking about two different error sources here. There’re the difficulties caused by the Sun not being a point source of light and also the difficulties in measuring the base and the perpendicular of our triangle accurately, even if the Sun was a point source. Size won’t improve the former although it might make that difficulty more obvious, but it can improve the latter. DaveP