Thanks for the feedback. What does EIT image mean?
The SOHO EIT is able to image the solar transition region and inner corona in four, selected bandpasses in the extreme ultraviolet (EUV):
Fe IX/X, 171 Å
Fe XII, 195 Å
Fe XV, 284 Å
He II, 304 Å
Using either full-disk or subfield images, the EIT can image active regions, filaments and prominences, coronal holes, coronal "bright points," polar plumes, and a variety of other solar features. The instrument was designed to be used in conjunction with other SOHO instruments, particularly the LASCO visible-light coronagraphs and the SUMER and CDS imaging spectrographs, as well as with ground-based instruments.
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Basically you are looking at narrow bands of very energetic electromagnetic radiation (light) emitted from the sun. Much more energetic then what our eyes can see. Regular UV burns the skin. They are looking at even more energetic UV light.