Description
Excerpt from A Manual of Spherical and Practical Astronomy, Vol. 2: Embracing the General Problems of Spherical Astronomy, the Special Applications to Nautical Astronomy, and the Theory and Use of Fixed and Portable Astronomical Instruments; Theory and Use of Astronomical Instruments; Method of Least Squares
The line of sight is he straight line drawn from the thread through the optical centre of the objective; for this line repro sents the direction of a,distant point (as a star), when the tele scope is so directed that an image of the point is formed at the thread. This line is also called the line of collimation; but we shall hereafter, for the sake of brevity, call it the sight-zine.
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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.
The line of sight is he straight line drawn from the thread through the optical centre of the objective; for this line repro sents the direction of a,distant point (as a star), when the tele scope is so directed that an image of the point is formed at the thread. This line is also called the line of collimation; but we shall hereafter, for the sake of brevity, call it the sight-zine.
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.
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Hardback
Published Date -
ISBN - 9780365316220
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Page Count - 634
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