The Dominion Astrophysical Observatory
by J. S. Plaskett
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Language: English
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About this eBook
- Author
- Plaskett, J. S. (John Stanley), 1865-1941
- Title
- The Dominion Astrophysical Observatory, Victoria, B.C.
- Credits
- Produced by Andrew Sly, MFR, David E. Brown, and the Online Distributed Proofreading Team at www.pgdp.net (This file was produced from images generously made available by The Internet Archive)
- Language
- English
- LoC Class
- QB: Science: Astronomy
- Subject
- Dominion Astrophysical Observatory
- Category
- Text
- Project Gutenberg
- eBook-No. 62557
- Release Date
- July 4, 2020
- Copyright
- Public domain in the USA.
Contents
- 1.The Dominion Astrophysical Observatory
- 2.SECTION 1.—HISTORY AND CONSTRUCTION — Introduction — Historical Sketch — Location — Construction
- 3.SECTION 2.—THE BUILDING AND DOME — The Observatory Building — The Dome — Dome Accessories — Mechanism for Silvering
- 4.SECTION 3.—MECHANICAL PARTS OF TELESCOPE — Introduction — The Telescope Tube — The Declination Axis — The Polar Axis — The Driving Clock — Electric Motions — Method of Operation — Special Features of the Mounting
- 5.SECTION 4.—OPTICAL PARTS AND SPECTROGRAPHS — The Principal Mirror — Mounting of Mirror — The Principal Focus — The Newtonian Arrangement — The Cassegrain Arrangement — Accessory Optical Parts — The Spectrographs — Method of Use
- 6.SECTION 5.—THE WORK OF THE TELESCOPE — Prevalent Misconceptions — Spectroscopic Work — Radial Velocities — Spectroscopic Double Stars — Absolute Magnitude and Distance — Physical Conditions in the Stars — Other Investigations — Value of Astronomical Work — Economic Value — Ethical Value
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