Download or read book A General Catalogue of 1920 Double Stars written by S. W. Burnham and published by Forgotten Books. This book was released on 2018-02-16 with total page 344 pages. Available in PDF, EPUB and Kindle. Book excerpt: Excerpt from A General Catalogue of 1920 Double Stars: Discovered From 1871 to 1899 A general catalogue of all the double stars discovered by me from time to time during the past twenty-hye years has long been needed by those interested in this field of astronomical research, and, by reason of the special interest attached to many of these remote sidereal systems, it has become more and more important to bring the scattered material together in order to intelligently pursue the investigations which promise to so much increase our knowledge of the great universe beyond the solar system. These discoveries are scattered through nineteen different catalogues, published at various times and places, commencing with 1873 and the observation of these stars by a great num ber of astronomers in this country and in Europe can only be made use of by consulting hundreds of volumes of observatory and society publications, astronomical periodicals, etc. It is difficult, if not practically impossible, for the general observer or investigator to make a really complete collee tion of all the measures of a large number of these stars. Many of the observations are in obscure and unusual places, and in works not always readily accessible. 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.