Miroslav Druckmüller and his companions acheive some fantastic photographic results when it comes to photographing the suns corona during a solar eclipse. Using a technique called photo stacking, a series of images in which you would not see many details can be compiled into one image, bringing out the very faint objects that you wouldn’t normally see. Check out the rest of his site as well, there are many outstanding astronomy photos and tidbits of information to be found there.