NavList:
A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
From: Gary LaPook
Date: 2011 Jan 8, 03:26 -0800
Some more thoughts.
My data set didn't reveal the possible advantage of the slope technique because there were no outliers to eliminate, the shooting was too good. This doesn't show that that technique would not have been valuable for a data set with more scatter.
You quickly reach the point of diminishing returns when taking many shots of a body to average because of the square root law so 5 or 6 shots might be optimum.
If you are going to use the slope technique it makes sense to apply the template early in the process before you have done a lot of computation on data that you may end up throwing out, so you should work with the raw sextant altitudes.
gl
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