Typewritten document describing Mount Wilson solar observatory photo, 1930-1934

Description

Text reads: The large sun tower at the Carnegie Institute on the summit of Mt. Wilson in Southern California. This tower is 150 feet above the ground. Light from the sun is reflected from the tower's summit down to the bottom of a shaft 75 feet below the surface of the mountain top, thence up the shaft again to ground leven [sic], where daily observations and photographs of the sun are made. Photo by Adelbert Bartlett, 535 15th Street, Santa Monica, Calif., Text from nitrate negative sleeve: 2153 Pls ret negs. Mt. Wilson - sun telescope. Photo by Adelbert Bartlett, 535 15th Street, Santa Monica, Calif. Sun telescope, 150 feet high, above grd, 75 feet below earth. 209R 1694, Access to this collection is generously supported by Arcadia funds.