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A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
Re: Correcting an Out of Date Nautical Almanac
From: Greg Rudzinski
Date: 2019 Oct 12, 09:02 -0700
From: Greg Rudzinski
Date: 2019 Oct 12, 09:02 -0700
I have added Polaris annual corrections to the custom NA correction bookmark star list. Polaris SHA and declination aren't listed on the daily pages but instead shown at the bottom of page 256. The Polaris SHA and declination can be corrected to the current year by applying annual corrections of -22.0' SHA +.22' Dec. Now a Polaris Hc can be calculated just like any other star using the law of cos formula and a trig calculator. This is much easier than using the Polaris table formula shown on page 256 of the NA.
Greg Rudzinski
