NavList:
A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
From: Andrew Bauer
Date: 2022 May 15, 10:04 -0700
Greetings! Following up on a previous post of mine (2021 Dec 5, 07:54 -0800), I can announce that my software "SFalmanac" is now published including Lunar Distance Tables and Charts. So to answer Murray Peake, yes, my code is now published in the folowing forms/places:
- in GitHub: https://github.com/aendie/SFalmanac-Py3
- in PyPI: https://pypi.org/project/sfalmanac/
- in DockerHub: https://hub.docker.com/repository/docker/aendie/sfalmanac
I would be pleased to receive feedback of any kind.
A little history: note that I initially inherited Pyalmanac from Enno Rodegerdts (https://sv-inua.net/the-nautical-almanac), who handed over his GitHub site to me. Thus the text in the Sun tables (option 2 in SFalmanac) has not been verified for accuracy. I have made improvements and corrections since 2019 ... in fact you can follow the ChangeLog in GitHub to follow what I've been up to. Pyalmanac (now ported to Python 3) became SFalmanac, and Skyalmanac was temporarily introduced to overcome slower calculations in Skyfield, which I later resolved by employing multiprocessing. I have also called upon Brandon Rhodes, author of Pyephem and Skyfield astronomical libraries, for assistance ocassionally. The Lunar Distance tables were originally inspired by the work of Jorrit Visser (who also used the Skyfield library) in his web site "celnav.nl" which just disappeared.
I include sample Lunar Distance Tables and Charts for June 2022 here:
