The Adolfo Stahl lectures in astronomy, delivered in San Francisco, California, in 1916-17 and 1917-18, under the auspices of the Astronomical Society of the Pacific (1919)
Astronomical Society of the Pacific, Aitken, Robert Grant, 1864-1951 · San Francisco Stanford University Press · leaf 379
ams and others. Themounting is of what is known as the English type, which hasthe advantage of compactness, and, in view of the great weight(100 tons) of the moving parts, is also, in the opinion of thedesigners, safer than any other type. By way of comparison,it may be noted that the moving parts… … PLATE LII. The 100-Inch Reflector, October. 1917. The 100-Inch Reflecting Telescope 253 area of the sky centering at the north pole. As the illustra-tion shows, the telescope is hung within a yoke or double fork,which measures 32 feet 8 inches by 16 feet 2 inches. To sup-port the great weight, the…
Astronomy
Internet Archive · Gerstein Library, University of Toronto · Public Domain Mark 1.0. Free to use for anything.
