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Re: Hav-Doniol Checker Beta2
From: Andrés Ruiz
Date: 2015 Jun 30, 08:37 +0200
From: Andrés Ruiz
Date: 2015 Jun 30, 08:37 +0200
Please, see: http://fer3.com/arc/m2.aspx/Review-Longhand-Haversine-Sight-Reduction-method-Andr%C3%A9sRuiz-jun-2015-g31824
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In the attached spreadsheets examples I use the formula implicit in the Hanno Z diagram:
sin Z cos Hc = sin t cos Dec
C = sin t * cos Dec
Z = asin( C/ cos Hc )
with:
-180º <= t <= 180º (the diagram has values for t between 0 and 90º).
If( |t|
> 90º ) |t| = 180º-|t|
0 <= Z <= 90º is E/W as the meridian angle is.
regards
