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A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
Re: Leap second today
From: Bill B
Date: 2012 Jul 02, 21:02 -0400
From: Bill B
Date: 2012 Jul 02, 21:02 -0400
On 7/2/2012 4:12 PM, Richard B. Langley wrote: > 2. If land surveyors were to attempt to do high-precision location via > celestial sights, would they use the NA for celestial data or a > publication giving celestial data to even higher precision? My recollection was surveyors had their own highly-accurate Sun and Polaris Ephemeris. I did find many pages through Google. Below is a URL for their 2012 data to compare/contrast with the NA. http://www.cadastral.com/2012jan.htm Bill B
