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The Full Moon, Yerkes Observatory, c1930s. Creator: UnknownThe Full Moon, Yerkes Observatory, c1930s. Yerkes Observatory in Wisconsin was founded in 1897 by astronomer George Ellery Hale
200 inch Hale telescope at Palomar Observatory, California, at night, c1948. This was the worlds largest telescope when completed in 1948, with a mirror 200 inches in diameter
George Ellery Hale (1868-1938), American astronomer, observing sunspots, 1907. Hale was director of Yerkes (1895-1905) and Mount Wilson (1904-23) Observatories
