Aspects of the zero level problem of solar magnetographs |
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Authors: | M L Demidov |
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Institution: | (1) The Institute of Solar-Terrestrial Physics at the Siberian Division of the Russian Academy of Sciences (ISTP SD RAS), P.O.Box 4026, 6640S3 Irkutsk, Russia |
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Abstract: | The zero level problem of solar magnetographs is particularly important for observations of large-scale magnetic fields on the Sun. Experiments conducted at the STOP telescope of the Sayan observatory show that, in addition to adjustment errors of the polarization analyzer and the spectrograph focusing, spurious signals of the magnetograph are caused by polarization effects in optical components preceding the polarization analyzer and aberration errors of the spectrograph. |
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Keywords: | Solar Magnetic Fields Solar Magnetographs |
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