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Index
The Dominion Astrophysical Observatory
SECTION 1.—HISTORY AND CONSTRUCTION
Introduction
Historical Sketch
Location
Construction
SECTION 2.—THE BUILDING AND DOME
The Observatory Building
The Dome
Dome Accessories
Mechanism for Silvering
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
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
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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