NavList:
A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
Re: DeltaT fits
From: Peter Hakel
Date: 2010 Apr 3, 14:20 -0700
Peter Hakel
From: Frank Reed <FrankReed@HistoricalAtlas.com>
To: NavList@fer3.com
Sent: Sat, April 3, 2010 1:20:23 PM
Subject: [NavList] Re: DeltaT fits
On the other hand, why use an algorithm to generate tabulated data?? Just grab the table and interpolate. Again, the accuracy is around 1 or 2 seconds of time in the late 18th century and around 0.1 to 0.2 seconds of time in the late 19th century, and it's very unlikley that there will EVER be any improvement in these acccuracies.
[parts deleted by PH]
From: Peter Hakel
Date: 2010 Apr 3, 14:20 -0700
A fitting formula has a smaller "footprint" compared to a large table. I find this to be a convenient memory-saving approach, especially in Excel. I think that your recommendation is better suited for an actual program/app written in C/C++ or similar.
Peter Hakel
From: Frank Reed <FrankReed@HistoricalAtlas.com>
To: NavList@fer3.com
Sent: Sat, April 3, 2010 1:20:23 PM
Subject: [NavList] Re: DeltaT fits
On the other hand, why use an algorithm to generate tabulated data?? Just grab the table and interpolate. Again, the accuracy is around 1 or 2 seconds of time in the late 18th century and around 0.1 to 0.2 seconds of time in the late 19th century, and it's very unlikley that there will EVER be any improvement in these acccuracies.
[parts deleted by PH]
