The Andromeda Galaxy, photographed from my Wiltshire garden. Situated 2.5 million light years from Earth and containing around one trillion stars, this spiral galaxy is larger than our own Milky Way. I photographed it with my Canon 5D Mk iii and a 400mm lens at F/5.6 and ISO 3200. The light used to produce this image was acquired during 50 exposures of 45 seconds each, stacked in processing. Thanks to Gavin James for the use of his tracking device to compensate for Earth's rotation during each exposure and generously provided assistance.