Author: Harold S. Blackburne

Publisher: Forgotten Books

Published: 2018-01-18

Total Pages: 194

ISBN-13: 9780483302013

Excerpt from Tables for Azimuths, Great-Circle Sailing, and Reduction to the Meridian: With a New and Up to Any Hours and Body to Above Hours From Meridian In Table B all the stars not less bright than 10 magnitude have been computed separately for their actual declinations for the epoch 1910 and, as their annual change Of declination is so small, these factors will be sufficiently accurate for all practical purposes for the next thirty or forty years, and no interpolation for declination Will be needed. The whole Of Table 0 has been newly calculated on the lines Of the late Mr. W. H. Rosser's table published in Noris'e Epitome, but this table (including latitudes to contains more than eight times the number of his computations, for the sake _of giving greater accuracy and less interpolation. This plan will, I believe, be more popular with most navigators than that previously given in the writer's Old table, as the azimuth is taken out more directly, and quite accurately enough for all practical purposes. Tables A and B have been worked to five places Of decimals where necessary, and Tables 0 and though only given to the nearest decimal Of a degree, have been calculated throughout to the nearest decimal of a minute for the sake Of accurate checking by differences. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.