Fig. 30: On this picture one can see the inner corona of the sun. The corona is a glowing gas layer around the sun, much dimmer than the normally visible part (photosphere) but much hotter, up to 2 mio. Kelvin. The photosphere is 'only' about 5800K hot. Under normal circumstances one can only see the corona during an total eclipse. — William Optics Zenithstar 105 ED Triplet APO f/6, 2x Nikon Teleconverter, Nikon F100, Fujichrome Velvia 100F, 1/30s, Side, Turkey, 29 March 2006
