Featured image: NASA/NOAA GOES-16/SUVI
NASA's new geostationary satellite GOES-16 has successfully captured first images using its Solar Ultraviolet Imager or SUVI instrument. SUVI replaces GOES Solar X-ray Imager (SXI) instrument in previous GOES satellites. The instrument is located on the Sun-Pointing Platform (SPP) of the satellite, which is located on the solar array yoke. The SPP provides a stable foundation and will track the daily and seasonal movement of the Sun.
Its first images show a large coronal hole on January 29, 2017. As our star is approaching solar minimum, coronal holes are becoming primary space weather phenomena. The one SUVI captured late last month initiated bright aurora throughout the Sun’s Polar Regions.
SUVI monitors the Sun in the extreme ultraviolet wavelength range and will capture full-disk solar images around-the-clock. It will be able to see more of the environment around the Sun than earlier NOAA geostationary satellites. The solar corona is best observed with X-ray and extreme-ultraviolet (EUV) cameras. Various elements emit light at specific EUV and X-ray wavelengths depending on their temperature, so by observing in several different wavelengths, a picture of the complete temperature structure of the corona can be made. The GOES-16 SUVI observes the Sun in six EUV channels, as shown in the picture at top.
Source references for this article:
The Watchers: https://watchers.news/2017/02/27/goes-16-suvi-first-images/