MULTISPECTRAL SUN

A multispectral image is one that captures image data at specific frequencies across the electromagnetic spectrum. The wavelengths may be separated by filters or by the use of instruments that are sensitive to particular wavelengths, including light from frequencies beyond the visible light range, such as infrared. Spectral imaging can allow extraction of additional information the human eye fails to capture with its receptors for red, green and blue. It was originally developed for space-based imaging.

Article:
http://phys.org/news/2013-12-image-solar-dynamics-observatory-sun.html
Credit: NASA/SDO/GSFC