08 December 2023 - Mission Day: 10234 - DOY: 342

The Sun observed by SUMER on 2-4 March 1996 in the emission line of He I at 584.3 A, formed in the upper chromosphere at about 20,000 K. The picture was put together from eight horizontal raster scans in alternating directions, starting in the solar NE. Each raster scan includes 1600 exposures, lasting 7 seconds each. The picture is shown in bins of 4x4 pixels, one pixel being approx. 1 arcsec. The brightest pixels correspond to an intensity of more than 70 counts/line/arcsec (with a maximum of approx. 200), while the average is around 10.



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Last modification: July 27, 2020

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