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Re: Latitude by Polaris
From: Andrés Ruiz
Date: 2019 Feb 11, 08:34 +0100
From: Andrés Ruiz
Date: 2019 Feb 11, 08:34 +0100
Hello Tony,
Is it possible to solve the equation for latitude by iteration:
Estimated position: Be, Le (DR or assumed, initial, ...)
LHA = GHA + Le;
Hc = ASIN(SIN(Be) * SIN(Dec) + COS(Be) * COS(Dec) * COS(LHA));
dH = Ho - Hc;
B = Be + dH;
For Polaris B ~ Ho and Dec ~ 90º
the convergence is very fast.
And you seem to be doing the same thing...
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