A high-school astronomy: in which the descriptive, physical, and practical are combined .. (1859)
Mattison, Hiram, 1811-1868 · New York, Mason brothers · leaf 239
rver to the house where the assistants are atwork. By this telescope, the sixth and seventh satellites of Saturn were discovered;and it was the chief instrument used by its distinguished owner, in making the obser-vations and discoveries which have immortalized his name, and which have so… … LORD ROSSK S OREAT REFLECTING TELESCOPE. 537. This is the largest reflecting telescope ever con-structed. The speculum, composed of copper and tin,weighed three tons as it came from the mould, and lostabout |th of an inch in grinding. It is 5^ inches thick,and 6 feet in diameter. It was cast on the…
Astronomy
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