ヘール望遠鏡
The Shane's mirror started as a 10,000-pound Corning Labs glass test blank for the Palomar Observatory's 200-inch (5-m) Hale telescope (in north San Diego County, California), but was sold below cost ($50,000) by Caltech to the Lick Observatory. It was then transported to Mount Hamilton, where the blank was ground and polished by the observatory.