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A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
Re: Alignment for a Lunar
From: Hewitt Schlereth
Date: 2022 Jan 24, 10:56 -0800
On Jan 24, 2022, at 12:32 AM, Frank Reed <NoReply_FrankReed@fer3.com> wrote:
From: Hewitt Schlereth
Date: 2022 Jan 24, 10:56 -0800
Very nice, Frank. Is this for a lunars app a lá GPS-Anti Spoof?
Hewitt
On Jan 24, 2022, at 12:32 AM, Frank Reed <NoReply_FrankReed@fer3.com> wrote:
Some "artwork" I've been working on... When you shoot a lunar, you preset the angle based on GMT/UT estimated to the nearest hour. Then you look direcyly at the Moon and rotate the sextant around the line of sight to the Moon until the line through the horns of the Moon is perpendicular to the sextant frame (or, equivalently, horizontal in the horizon glass). The Sun pops right into view. From there it's just fine-tuning to get the Sun's limb to exactly "kiss" the Moon's limb.
Frank Reed
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