Browse Items (54 total)

Unknown, Interior of 18-inch dome, axis and tubes, 1894

Interior of 18-inch dome, axis and tubes, 1894

Unknown, Interior of 18-inch telescope dome, 1894

Interior of 18-inch telescope dome, 1894

Unknown, 18-inch telescope dome, 1894

18-inch telescope dome, 1894

Unknown, 18-inch telescope dome, 1894

18-inch telescope dome, 1894

Unknown, 18-inch telescope dome, 1894

18-inch telescope dome, 1894

Unknown, Skeleton of 18-inch telescope dome, beginning of construction, 1894

Skeleton of 18-inch telescope dome at the beginning of construction, 1894

Unknown, 12-inch and 18-inch telescopes on a single mount, 1894, 1894

Interior of dome with 12-inch and 18-inch telescopes on a single mount, designed by Alvan Clark.

Unknown, Clyde Tombaugh at 13-inch telescope eyepiece, ca. 1930

Clyde Tombaugh at the 13-inch telescope eyepiece. Tombaugh discovered Pluto on February 18, 1930.

Unknown, Clyde Tombaugh at the door of the 13-inch telescope, ca. 1930

Clyde Tombaugh at the door of the 13-inch telescope. Tombaugh discovered Pluto on February 18, 1930.

Unknown, Constance Lowell at Percival Lowell's Mausoleum, ca. 1925

Percival Lowell's widow, Constance, mourns at his mausoleum on Mars Hill.