1-152-391 - Ann Ronan Picture Library/Heritage-Images

George Ellery Hale (1868-1938), American astronomer, observing sunspots, 1907. Hale was director of Yerkes (1895-1905) and Mount Wilson (1904-23) Observatories. He was instrumental in the development of very large telescopes, including the 60 and 100 inch reflectors at Mount Wilson and the 200 inch reflector at Palomar Observatory. As an astronomer he is best known for his research into sunspots. Courtesy Mount Wilson and Palomar Observatories