Extreme Ultraviolet Imaging Spectrometer

The Extreme Ultraviolet Imaging Spectrometer (EIS) is a scientific instrument used on solar observatories to study the Sun’s outer atmosphere, or corona. It detects and analyzes extreme ultraviolet light emitted by highly energized particles in the Sun’s plasma, allowing scientists to measure temperatures, densities, and flow of solar material. This helps in understanding solar phenomena like solar flares and coronal mass ejections, which can affect space weather and Earth’s magnetic environment. EIS provides detailed spectral data that reveals the physical conditions and dynamics of the Sun’s hot, ionized gases at different layers of its atmosphere.