Eva Gryk photographed these star trails using her Nikon D90, tripod and cable release. Eva located the Big Dipper and followed it's outer edge to find the North Star. When positioned suitably within the frame, the Big Dipper and other stars will appear to "rotate" around the North Star and create circles in the image. Exposure was set at F4.5 and ISO 100. The image is a combination of four exposures taken over an hour and a half time and combined in Photoshop.