A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
From: Robert VanderPol II
Date: 2016 Sep 20, 16:41 -0700
I had no problem getting a new S-tables for the cover price.
The S-tables are a shortened version of Ageton with an added work sheet for working sights backwards to identify a star already shot that you were uncertain of.
Bayless is also a shortened version of Ageton. The second edition has an added worksheet with an alternate method (Sadler) for when one of the intermediate values is close to 90o and the final result can be in error upto 30'.
Within the last 3 months there was a long running thread started by PaulH who used a random selection of 1,000,000 sights reduced by the above Ageton, Bayless, Pepperday and Sadler methods and compared results to direct mathematical reduction and provided the statistics showing how they all and when it might be advantageous to use one rather than the other.