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A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
Dozier Formula
From: Dan Hogan
Date: 2001 Nov 19, 11:37 AM
From: Dan Hogan
Date: 2001 Nov 19, 11:37 AM
First I am not a trained mathematician, I need a calculator to work higher
math ;^)
For years I have used the dozier formula from The Calculator Afloat, by
Schufeldt & Newcomer for sight reduction with a calculator.
The normal Dozier formula is:
tan Zn = sin LHA / cos LHA * sin L - cos L * sin d
Rewritten as because of the result coming out 180 degrees off and of using
the Polar-to-rectangular function:
tan(Zn - 180) = sin LHA / cos LHA * sin L - cos L * tan d
Then *using invented notation* rewritten again as:
Zn = 180 + R->P (sin LHA * cos d, cos LHA * cos d * sin L - cos L * tan d
Now can someone explain what the COMMA after the first cos d stands for?
Dan Hogan WA6PBY
C27 "Gacha"
dhhogan@verimail.com
Nav-L Page: http://www.wa6pby.com
