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 Astronom
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 ...
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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. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at ... 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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