[View of Lick Observatory, Mt. Hamilton, CA]

Barnard moved to California in 1887 to inaugurate the new observatory at Mount Hamilton near San Jose. He discovered the first non-Galilean moon of Jupiter, Amalthea, in September 1892, over 275 years after Galileo's discoveries. Observatory staff fought over access to the 36-inch telescope, making working conditions difficult. Barnard moved to Yerkes Observatory in Williams Bay, Wisconsin, in 1895 with an astronomy appointment at the University of Chicago.