The Solar Mass Ejection Imager (SMEI)

Details The Solar Mass Ejection Imager (SMEI) The Solar Mass Ejection Imager (SMEI)

Dec 2003

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003agufmsh41c..02s&link_type=abstract

American Geophysical Union, Fall Meeting 2003, abstract #SH41C-02

Other

7513 Coronal Mass Ejections, 7531 Prominence Eruptions, 7594 Instruments And Techniques

Scientific paper

The Solar Mass Ejection Imager (SMEI) has been designed to detect and forecast the arrival of solar mass ejections and other heliospheric structures which are moving towards the Earth. We describe the instrument, which was launched into a Sun-synchronous polar orbit on 6 January, 2003 on board the US DoD Coriolis spacecrafth. SMEI contains three CCD cameras, sensitive over the optical waveband, each with a field-of-view of 60 degrees x 3 degrees. The sensitivity is such that it will detect changes in sky brightness equivalent to a tenth magnitude star in one square degree of sky. Each camera takes an image every 4s and the normal telemetry rate is 128 kbits/s. SMEI has a photometric accuracy of around 0.1%. In addition to solar mass ejections, images of stars and the zodiacal cloud are measured to this photometric accuracy once/ orbit (102 minutes).

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