NavList:
A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
Re: Hav-Doniol Checker Beta2
From: Stan K
Date: 2015 Jun 30, 10:04 -0400
From: Stan K
Date: 2015 Jun 30, 10:04 -0400
Andres,
Thanks, but too late - I saw this message after I made the required bug fixes (I hope). Using these formulas might have saved a line or two of code, but I think what I have now works.
Stan
-----Original Message-----
From: Andrés Ruiz <NoReply_AndresRuiz@fer3.com>
To: slk1000 <slk1000@aol.com>
Sent: Tue, Jun 30, 2015 3:07 am
Subject: [NavList] Re: Hav-Doniol Checker Beta2
From: Andrés Ruiz <NoReply_AndresRuiz@fer3.com>
To: slk1000 <slk1000@aol.com>
Sent: Tue, Jun 30, 2015 3:07 am
Subject: [NavList] Re: Hav-Doniol Checker Beta2
Please, see:
http://fer3.com/arc/m2.aspx/Review-Longhand-Haversine-Sight-Reduction-method-Andr%C3%A9sRuiz-jun-2015-g31824
--
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
