NavList:
A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
Re: Why are NA sight reduction tables not
From: Alexandre Eremenko
Date: 2012 Apr 8, 19:35 -0400
From: Alexandre Eremenko
Date: 2012 Apr 8, 19:35 -0400
Gary, > The criticism of this standard formula is that it produces > an "azimuth angle" in the range of 0 to 90? and so some worry that a > navigator might get confused when the azimuth is near east or west. The rule is simple. Besides I suppose most navigators remember which way they faced when taking altitude:-) Especially when this was Sun:-) And all these formulas need some rule: the Almanac and PS formulas give you cos A, you still need to think whether is is E or W. (See Step 4, on p. 279 of the Almanac). Alex.
