...In 1862 Alvan G...
George Forbes 「History of Astronomy」
...The object-glasses of these and of the thirty-inch telescope ofthe Observatory of Pulkowa, in Russia, were made by the great opticalhouse of Alvan Clark & Sons, of Cambridge, Massachusetts, U...
Cecil G. Dolmage 「Astronomy of To-day」
...It was predicted byBessel, its position calculated by Peters, and seen by Alvan Clark in1862...
Oliver Lodge 「Pioneers of Science」
..., ,
Clairut, , , , , ,
Clark, Alvan and Sons,
Columbus, ,
Copernicus, , , seq...
Oliver Lodge 「Pioneers of Science」
...In February, 1862, Alvan Clark, artist, poet,and maker of telescopes (which requires even greater genius than tobe both poet and artist), discovered the companion of Sirius justin its predicted place...
Henry Warren 「Recreations in Astronomy」
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