SOI: The Solar Oscillations Imager on SOHO

Details SOI: The Solar Oscillations Imager on SOHO SOI: The Solar Oscillations Imager on SOHO

Nov 1988

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988sohi.rept...25s&link_type=abstract

In ESA, The SOHO Mission. Scientific and Technical Aspects of the Instruments p 25-30 (SEE N90-13302 04-92)

Physics

3

Helioseismology, Project Management, Soho Mission, Solar Magnetic Field, Solar Oscillations, Data Reduction, Doppler Effect, Laser Doppler Velocimeters, Michelson Interferometers

Scientific paper

The Solar Oscillations Imager (SOI) program for SOHO (solar and heliospheric observatory) is described. It will consist of a Michelson Doppler Imager (MDI) instrument, a facility providing data reduction and analysis capability, and a coordinated set of investigations designed to address a set of science objectives. The MDI is designed to take advantage of the anticipated SOHO telemetry by organizing the observations into four observation programs: structure (at all times), dynamics (two months per year), campaign (eight hours per day, ten months per year), and magnetic fields (few minutes per day). The MDI will measure line-of-sight velocity by Doppler shift, transverse velocity by local correlation tracking, line and continuum intensity, and line-of-sight magnetic fields with both 4 and 1.4 arc-second resolution (2 and 0.7 arc-sec pixels respectively).

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