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A new system for observing solar oscillations at the Mount Wilson Observatory |
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| Authors: | Edward J Rhodes Jr Robert F Howard Roger K Ulrich Edward J Smith |
| Institution: | 1. Department of Astronomy and Earth and Space Sciences Institute, University of Southern California, 90007, Los Angeles, CA, U.S.A. 2. Space Physics Section, Jet Propulsion Laboratory, California Institute of Technology, 91109, Pasadena, CA, U.S.A. 3. Mount Wilson and Las Campanas Observatories, Carnegie Institution of Washington, 91101, Pasadena, CA, U.S.A. 4. Department of Astronomy, University of California at Los Angeles, 90024, Los Angeles, CA, U.S.A. 5. Space Physics Section, Jet Propulsion Laboratory, California Institute of Technology, 91109, Pasadena, CA, U.S.A. |
| Abstract: | In this paper we describe a new observing system which is currently nearing completation at the Mount Wilson Observatory. This system has been designed to obtain daily measurements of solar photospheric and subphotospheric rotational velocities from the frequency splitting of non-radial solar p-mode oscillations of moderate to high degree (i.e. l > 150). The completed system will combine a 244 × 248 pixel CID camera with a high-speed floating point array processor, a 32-bit minicomputer, and a large-capacity disc storage system. We are integrating these components into the spectrograph of the 60-foot solar tower telescope at Mount Wilson in order to provide a facility which will be dedicated to the acquisition of oscillation data. |
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