The first results of solar observations made in the Crimean Astrophysical Observatory using a magneto-optical filter

Details The first results of solar observations made in the Crimean Astrophysical Observatory using a magneto-optical filter The first results of solar observations made in the Crimean Astrophysical Observatory using a magneto-optical filter

Nov 1996

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1996r%26qe...39..916d&link_type=abstract

Radiophysics and Quantum Electronics, Volume 39, Issue 11-12, pp. 916-920

Physics

Scientific paper

The results of observations of Doppler velocities and solar magnetic fields using a magneto- optical filter (MOF) are presented. The MOF-based instrument was manufactured and supplied to the Crimean Astrophysical Observatory (CrAO) by the University of Southern California. It is one of three similar instruments designed to establish the helioseismology network „Mount Wilson —CrAO — AFiF” (Fesenkov Astrophysical Institute in Alma- Ata.) Apart from its main purpose — obtaining a long time series of the Doppler velocity measurements to study the internal solar structure and recording the magnetic fields for the ground- based support of the SOHO project — the instrument allows us to study different structural formations in the solar atmosphere in Na D1 and D2 spectral lines. This conclusion relies on the comparison between the magnetic field and beam velocity maps calculated using the filtergram pairs, which were recorded twice a minute by 512×512 video-camera (1024×1024 camera will be used in the future studies).

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