corona-1922–with-Einstein-camera

“Corona Sept. 21, 1922 with 11 ft Einstein Camera Exp. 45 sec.” A reduction of one of the two 45-second exposures the Toronto team were able to make with the Einstein Camera during the eclipse. This image, in its original form, was used for measuring the displacements of stars. Courtesy of the University of Toronto Archives (A2023-0010/P(130)) Read More