The camera is unique, not like a DSLR that exposes all the pixels at once. There's no shutter. The camera is designed more along the lines of a flatbed scanner hooked up to a very, very long telephoto lens. As the satellite floats along, the image of the earth in effect moves beneath it. The imaging bar, called a "push broom sensor," covers an area on the ground that's 16.8 km wide (nearly 10 miles). It focuses the image onto a CCD array that is 13 inches wide and contains nearly 30,000 pixels. And the resolution is astounding. Herring says each pixel covers an area on the ground about the size of home plate, which allows you to clearly see a car.