Sun Halo from Conon Bridge (date unknown) - Eric Walker

This is a very common halo visible all over the world throughout the year. They occur when the sky contains wispy, hazy, thin cirrus clouds. These clouds are cold and contain ice crystals which refract and reflect the sunlight to form the halo and other associated phenomena. The halo is large and always the same size, no matter where it is in the sky. The image was taken with a Nikon Coolpix 5700, IS0 100, f/5.0, 1/4000sec, fl=8.9mm with a 0.45x wide-angle teleconvertor lens and processed with Adobe Photoshop CS. Note that I masked the Sun with my thumb to ensure the halo dominated the image. The clouds have come out pretty good as well. www.astrophotos.plus.com