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The Sun imaged by EIT at 304 Å

The Sun imaged by EIT at 304 Å


Date: 14 September 1999
Satellite: SOHO
Depicts: Solar prominence
Copyright: ESA/NASA - SOHO/EIT

This image shows the solar disc as observed by SOHO's Extreme ultraviolet Imaging Telescope (EIT) at a wavelength of 304 Å, probing a spectral line emitted by ionised helium (He II). Corresponding to a temperature of about 60,000 Kelvin, emission in this line shows the upper chromosphere of the Sun.

The features in the image trace the structure of the Sun's magnetic field. A huge prominence is visible on the upper right side.

This snapshot was taken on 14 September 1999.

Last Update: 1 September 2019
28-Mar-2020 21:37 UT

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