Presentation on Sun through Different Filters

The Sun that dominates our daytime sky and provides the thermal energy necessary to support life on Earth is of course — a star. Its proximity to Earth, at about 150 million kilometers, allows us to study its surface and to characterize this average star with unprecedented detail. In this presentation; these images were taken by the Precision Solar Photometric Telescope at Mauna Loa Solar Observatory in Hawaii.  They show how the Sun looks at two different wavelengths of light.  The image on the left was taken through a filter that allowed only blue light through.