A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
From: Robert VanderPol II
Date: 2016 Jun 15, 14:41 -0700
I see you point about non-uniform tabulation. I was thinking about it from the perspective of a lookup table like I would use in Excel which is what I mostly use instead of a programing perspective, where yes it would be lot's harder.
The point of the graphs I was suggesting is to better determine when to use Sadler's technique or when to discard observations. In Bayless there is a graph that indicates when to use Sadler but the narrative admits the criteria for deciding is a bit arbitrary. I have been trying to think of ways to improve that graph.
You indicate that for 0.5o tabulation, t<82o and >98o and dec less than 75o max error is 2.9'. Should that read t or K? 82o>K<98o is what recieves the caution in Ageton, Pepperday and Bayless as I recall.