Total Solar Eclipse and Sun Corona on Aug 21 2017 照片檔

This is a photo of the Aug 21 2017 total solar eclipse, on the path of totality in Oregon. During the moment of totality, and only during that time, the moon completely hides the sun, and you can look at the total eclipse with the naked eyes, with no need to glasses or filters. And this is what you see! The faint hair-like whitish thing is the Corona. The Corona can only be seen during the moment of totality, when the Sun is completely hidden by the Moon (which lasted about 2 min). It is formed of ionized particles ejected from the Sun, forming solar wind. When they reach the Earth, those particles form aurora borealis ("northern lights"). The pink spots are prominences, i.e. giant splashes of sun's molten material. There were two very visible ones this time. At the bottom left, you can see a star, it is Regulus. I obtained this image using HDR processing, from 4 exposures that I took with a regular DSLR camera with a 300mm telephoto.