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A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
Re: Amplitudes
From: George Huxtable
Date: 2010 Jun 2, 22:56 +0100
From: George Huxtable
Date: 2010 Jun 2, 22:56 +0100
About amplitudes, I had written- "the table of amplitudes was completely symmetrical, between Summer, when the declination was an the same hemisphere as the observer, and the amplitude was in the opposite hemisphere ; and Winter, when the signs of latitude and declination were opposite, and again, the amplitude was opposite to the sign of the declination. " ============================== But I got that wrong. If declination is North, then Amplitude is North of East (or West), , not South of East (or West). The sign of the amplitude should be the same as the sign of the declination, not opposite, as I wrote. My apologies. George. contact George Huxtable, at george@hux.me.uk or at +44 1865 820222 (from UK, 01865 820222) or at 1 Sandy Lane, Southmoor, Abingdon, Oxon OX13 5HX, UK.
