Hat Creek Observatory

Hat Creek Observatory

A radio astronomy observatory in California operated by the University of California, Berkeley at an altitude of 1024 meters. The 26-meter dish, once used for millimeter-wave astronomy, blew down in Jan. 1993. The remaining major instrument at the site is the Berkeley-Illinois-Maryland Association array (BIMA array) – a millimeter-wave interferometer. The array consists of ten dishes, each of 6-meter diameter, on tracks that stretch 300 m E–W and 200 m N–S. It can observe at wavelengths between 1.3 and 2.6 mm.
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Mitchell and Imke de Pater (University of California, Berkeley) used radio telescopes at Hat Creek Observatory and the Very Large Array as microwave interferometers to create maps of the innermost planet at wavelengths between 0.
The Hat Creek Observatory is located in an area that is 'radio quiet,' thereby reducing the level of interfering signals from man-made sources.