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Excerpt from Celestial Objects for Common Telescopes, Vol. 2 of 2
Vol. II. Has been rewritten, and every effort has been made to bring it up to date. Publications on double stars are now numerous, but not easy of access to the amateur, and it was thought Well to complete the list as far as Mag. 65, and to give as far as possible later measures where there is motion. In the case of some of the rapid Binaries nothing could be done beyond giving a general idea Of direction and distance. For some later unpublished measures I am indebted to the kindness of the Astronomer Royal, also to Mr. Franks and Rev. Th. E. R. Phillips. Mr. Innes, at my request, undertook to bring the list of Double Stars in the Southern Hemisphere up to date, the boundary being fixed beyond S. Decl. Mr. T. Lewis, who is so eminently the authority in England on double stars, has kindly furnished me with many valuable hints. As the previous index omitting the star places was found inconvenient, a new index giving the places as well as the page is now given, on the lines kindly suggested to me by Dr. W. H. Maw, for the double stars. This has been extended to the Nebulae, red stars, and spectroscopic Objects, and it is hoped that it will meet the requirements of those who work with Equatorials. The star places are for 1920, and have been simply corrected for precession, and no greater accuracy has been aimed at than in the previous editions. Mr. W. Milburn has rendered valuable aid in arranging the stars for the new index, and in reading through the proof sheets Of each volume.
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Celestial Objects for Common Telescopes, Vol 2 of 2 Classic Reprint
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Paperback. Condizione: New. Print on Demand. This book is an in-depth account of the starry heavens as seen from Earth, taking a descriptive survey of the constellations, clusters, and nebulae visible using popular telescopes of the 19th century. Written towards the end of the reconstruction era of the United States, the book was comprehensive for its time and reflected the growing interest in astronomy in the western world. Notably so, the writer had access to a rare and powerful (for the time) 9.5-inch reflecting telescope, enabling them to describe in detail some of the smaller celestial objects. Packed with more than 800 entries in total, the book provided not only observational descriptions, but also historical and other relevant information on a range of topics including binary stars, nebulae, and more. The book includes observations of not only the visible appearance of these celestial bodies, but also where possible their apparent color, and changes over time due to movements or shifts in appearance. The writer, noted for their sharp eyesight, also includes many of their own observations from many hours spent under the night sky and provides interesting side notes and clarifications as they compare their observations to those of other astronomers, both near contemporary, and historical. This book is a reproduction of an important historical work, digitally reconstructed using state-of-the-art technology to preserve the original format. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in the book. print-on-demand item. Codice articolo 9781333634483_0
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