A high-school astronomy: in which the descriptive, physical, and practical are combined .. (1859)
Mattison, Hiram, 1811-1868 · New York, Mason brothers · leaf 233
he direction ofProf. 0. M. Mitchel, by whose instrumentality it waspurchased and mounted. The object-glass is about 12 inches in diameter, with a focal distance of 17 feet. Itwas purchased in Munich, Germany, in 1844, at an expense of nearly ten thousand dol-<ars. There is but one larger than… … Tllii GliKAT CliAIG TKLKSCOIE, WANDSWORTH COMMON, NEAR LONDON. 525. This is the largest refracting telescope ever constructed. The object-glass is two feet in diameter, witha focal distance of 76 feet. The tube is of heavy sheetiron, and shaped somewhat like a cigar. It is 13 feet incircumference…
Astronomy
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