The rare transit of Venus across the face of the Sun in 2004 was photographed widely from Europe, to Asia to Africa and North America by professionals and amateurs. North Carolina based photographer David Cortner explains how he made the photograph, which was featured on Astronomy Picture of the Day: "I made this photo on a rainy morning from an overlook above North Carolina's Catawba River. The sky was clear for only a few minutes, just long enough to grab this photo with a Nikon DSLR and a 5-inch Astro-Physics refractor....