A new method of magnetograph observation of the photospheric brightness,velocity, and magnetic fields |
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Authors: | Robert Howard Andrew S. Tanenbaum John M. Wilcox |
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Affiliation: | (1) Mt. Wilson and Palomar Observatories, Carnegie Institution of Washington, California Institute of Technology, Pasadena, Calif., U.S.A.;(2) Space Sciences Laboratory, University of California, Berkeley, Calif., U.S.A. |
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Abstract: | Several improvements have been made to the Mount Wilson Observatory solar magnetograph, including changes to the guider, the Doppler compensator, and the data-handling system. The improved magnetograph has been used for a new type of solar observation consisting of several hundred scans back and forth along a straight line of length 3/4 R0 perpendicular to central meridian. The data reduction, which is done entirely with a computer, eliminates those effects which have their origin in the earth-sun geometry. The spatial and temporal properties of the 5-min oscillations are discussed. |
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