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Astronomy Upper Atmosphere

Upper atmospheric imaging

Upper atmospheric imaging

The upper atmosphere is the atmosphere around 80 to 400 km high. This height corresponds to the boundary region between Earth's atmosphere and outer space. This part of the atmosphere is in a plasma state which is ionized. Due to the interaction between the plasma and the atmosphere, auroras are produced in the Arctic and Antarctic regions. During the night, a dim airglow is produced at this altitude. The dynamics of the upper atmosphere can be measured with a high-sensitivity, high-resolution, and high-speed camera.

High-speed cameras installed at the aurora borealis observatory*

超高層大気イメージング  

Aurora imaging*

オーロライメージング  

*Courtesy of Yoshizumi Miyoshi, Ph.D.,
Institute for Space-Earth Environmental Research (ISEE),
Nagoya University

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