NavList:
A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
From: Gary LaPook
Date: 2013 Jan 30, 14:05 -0800
That's an accurate description of it's use. Of course there are other ways to determine hour angle. Traditionally it was determined in time units so one did the computation of it by adding GCT and Eq.T. Navigational tables, such as Nories Haversine table (traditional navigation method), used time units for the entering argument. Even with the "new navigation" Weem's Line of Position Book, 1927 through 1943 editions also included time units for the HA entering argument (in addition to angular units.) It was also a common practice to carry two watches, one keeping GCT and the other adjusted to keep Greenwich Sidereal Time for star computations. gl gl --- On Wed, 1/30/13, Roger Connor <connorr@si.edu> wrote:
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