Northern Star
Northern Star

Author: R. Peter Broughton

Publisher: University of Toronto Press

Published: 2018-01-01

Total Pages: 594

ISBN-13: 1442630175

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Northern Star explores Plaskett's unorthodox and fascinating life from his rural roots near Woodstock through his days as a technician at the University of Toronto to his initiation in astronomy at the Dominion Observatory in Ottawa.

The Dominion Astrophysical Observatory, Victoria, B.C.; a Sketch of The Development of Astronomy in Canada and of The Founding of This Observatory. a Description of The Building and of The Mechanical and Optical Details of The Telescope. An Account of The
The Dominion Astrophysical Observatory, Victoria, B.C.; a Sketch of The Development of Astronomy in Canada and of The Founding of This Observatory. a Description of The Building and of The Mechanical and Optical Details of The Telescope. An Account of The

Author: John Stanley Plaskett

Publisher: Legare Street Press

Published: 2023-07-18

Total Pages: 0

ISBN-13: 9781019607602

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John Stanley Plaskett's magnum opus, 'The Dominion Astrophysical Observatory Victoria BC' is a comprehensive survey of the history of astronomy in Canada and the founding and development of the Dominion Astrophysical Observatory in Victoria, British Columbia. The Observatory played a pivotal role in the history of astronomy and this work is a testament to its significance. This work has been selected by scholars as being culturally important, and is part of the knowledge base of civilization as we know it. This work is in the "public domain in the United States of America, and possibly other nations. Within the United States, you may freely copy and distribute this work, as no entity (individual or corporate) has a copyright on the body of the work. Scholars believe, and we concur, that this work is important enough to be preserved, reproduced, and made generally available to the public. We appreciate your support of the preservation process, and thank you for being an important part of keeping this knowledge alive and relevant.

The Dominion Astrophysical Observatory, Victoria, B. C
The Dominion Astrophysical Observatory, Victoria, B. C

Author: J. S. Plaskett

Publisher: Forgotten Books

Published: 2018-03-18

Total Pages: 42

ISBN-13: 9780364947272

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Excerpt from The Dominion Astrophysical Observatory, Victoria, B. C: A Sketch of the Development of Astronomy in Canada and of the Founding of This Observatory; A Description of the Building and of the Mechanical and Optical Details of the Telescope; An Account of the Principal Work of the Institution The order for the large disc for the 72-inch mirror and for an auxiliary flat of 55 inches diameter for testing the 72-inch was given to the St. Cobain Glass Works of Paris by the Jno. A. Brashear Co. As soon as the contract was awarded. The 72-inch disc was cast and annealed by June 1914 and was fortunately shipped at once without waiting for the 55-inch disc. It left Antwerp only about a week before war was declared and it was only by this small margin that Canada now has a 72-inch telescope. Grinding and polishing were at once begun but the lack of the large flat and other difficulties delayed the completion and it was not until April 1918, about a year and a half after the completion of the mounting, that the figuring was finally completed and the telescope ready for work. Nevertheless, for an undertaking of such magnitude the work was completed in record time, four and a half years after the awarding of the contracts. 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.