ジェームズ・クレイグ・ワトソン
He attended public schools, and then became an apprentice in a machine shop. During his apprenticeship, he became interested in astronomy, and decided to finish high school. He then became a student of James Craig Watson at the University of Michigan. He graduated from the University of Michigan in 1876 as a civil engineer, but devoted himself to astronomy. He taught astronomy at the University of Michigan from 1876 to 1888. He maintained his own private observatory and discovered three comets. In 1888 he became one of the inaugural astronomers at Lick Observatory.