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Continue ShoppingThe Star Almanac for Land Surveyors (NP321), 2021 Edition
This is a ADMIRALTY Astronomical Publication with information to support marine celestial navigation.
The Star Almanac contains positions of the major and selected bright stars in a tabular format for easy identification. It is ideal for land surveyors who use astronomical observations to determine their geographical position or the direction to true north.
This edition includes:
A CD containing the almanac in PDF format and the coefficients representing the positions of the Sun and stars in ASCII files
Coefficients for calculating the Greenwich hour angle and declination of all the stars published in The Star Almanac, accurate to about 1 arcsecond
Polynomial coefficients for calculating R (GHA Aries - UT), declination, E and semi-diameter of the Sun are also included
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