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Palomar Observatory, site of the 48-inch schmidt-type camera, is 5600 feet (1707 meters) above sea level.The geographic co-ordinates of the 48-inch schmidt dome as determined by the U.S. Coast and Geodetic Survey are : latitude 33° 21' 26'.'35 north and longitude 116° 51' 32'.'04 west.
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Robert G. Harrington (1952) studied this question.
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