NavList:
A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
From: Gary LaPook
Date: 2015 Jul 10, 01:37 -0700
My statement about the accuracy of the Bygrave formulas compared to the usual sine-cosine formulas related to working the computation on a ten inch slide rule. The test of the accuracy was done by a computer analysis conducted by Paul Horose. Ity did not relate to the Ageton method."RMS" means root mean square, a standard measure of accuracy of this type of data. See:
http://fer3.com/arc/m2.aspx/Bygrave-formula-accuracy-10-inch-slide-rule-Hirose-jul-2009-g8985
http://fer3.com/arc/m2.aspx/Bygrave-formula-accuracy-10-inch-slide-rule-LaPook-jul-2009-g9019
http://fer3.com/arc/m2.aspx/Accuracy-Bygrave-LaPook-jul-2009-g8973
http://fer3.com/arc/m2.aspx/Accuracy-Bygrave-LaPook-jul-2009-g8975
We discussed the Bygrave at length in July 2009, see:
http://www.fer3.com/arc/sort2.aspx?y=200907&sort=su&y2=200907&author=&subject=
gl
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So then several NavList members have tested Bygrave against Ageton and found Bygrave more accurate. I presume this means "more accurate within these particular ranges of Ho or of meridian angle".
What would be some of the conditions under which the Bygrave equations would demonstrate their greater accuracy?
Oh, and what does "rms" mean in the quote above?
