NavList:
A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
Re: Table of interstellar angles
From: Brad Morris
Date: 2012 Dec 13, 11:38 -0500
From: Brad Morris
Date: 2012 Dec 13, 11:38 -0500
The interstellar distance without refraction is easily calculated.
What you measure with your sextant INCLUDES refraction.
There has been extensive discussion on this list about how to calculate the refraction and how that affects the interstellar distance.
Brad
On Dec 13, 2012 11:32 AM, "Sean C" <yhshuh@aol.com> wrote:
They can be easily calculated with info from the Naut. Almanac and the following formula:
arccos(sin(Declination 1)*sin(Declination 2)+cos(Declination 1)*cos(Declination 2)*cos(GHA 2-GHA 1)
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