The Star Almanac for Land Surveyors
Description:
Nautical Publication Number: NP 321
This almanac contains positions of the Sun, Polaris and selected bright stars in a form which is convenient for land surveyors who use astronomical observations to determine their geographical position or direction to true north. This edition includes a CD-RoM which contains the almanac in pdf format and the coefficients representing the positions of the Sun and stars in ASCII files.
ASCII data files are available on the CD-RoM which contain coefficients for calculating the Greenwich hour angle and declination of all the stars published in The Star Almanac, accurate to about 1 arcsecond. The polynomial coefficients for calculating R (GHA Aries - UT), declination, E and semi-diameter of the Sun published on page 75 of the Almanac are also included.
Starting with the 2011 edition, this publication is now printed on A5 paper.
Purchase:
To buy HMNAO Astronomical Publications including The Star Almanac for Land Surveyors please select from the links below:
UKHO Distributors: Thomas Gunn Online Shop.
Other Outlets: TBA
Status:
- The 2010 edition is available:
UKHO Nautical Publication number: NP 321-10
Published in the UK: 2009 June 18th
13 character ISBN: 978-0-7077-40980
Pages: 80
Retail price: £16.75 - The 2011 edition is available:
UKHO Nautical Publication number: NP 321-11
Published in the UK: 2010 June 3rd
13 character ISBN: 978-0-7077-41185
Pages: 80
Retail price: £16.75 - If you have difficulty in finding this publication please contact UKHO Customer Services:
by telephone: +44 (0) 1823 723366 by fax: +44 (0) 1823 330561 by e-mail: customerservices@ukho.gov.uk
© Crown Copyright 2008-2010 E-mail: hmnao@ukho.gov.uk
Last modified: Friday, 02-Jul-2010 11:34:52 BST