Description
Hansen’s Improved Ex-Meridian Tables is a set of tables for astronomical observations near the meridian passage. The tables simplify the calculation of latitude when the celestial body is observed outside the exact meridian.
The layout uses local hour angle as the angular measure. The publisher’s description specifies a table range from 60 degrees North to 60 degrees South and declination up to 23 degrees North or South. Within these limits, the tables can also be used for relevant observations of the moon, stars, and planets.
The work is suitable for navigators, educators, and students with an interest in classical navigation calculations. It requires an understanding of astronomical observations and must be used in conjunction with correct observation data and a current almanac.
The publication is in English and is published by Brown, Son & Ferguson Ltd. Revised edition, 2023. ISBN: 9781849271370.
