Charlie Summers / The Comet C/2012 S1 (ISON) travelling past the constellation leo, seen from eastern Colorado, 2nd November 2013 from eastern Colorado. The bright star to the left is Sigma Leo.

Charlie Summers / Horsehead and Flame Nebulae seen from east Colorado. Taken with digital focus stacking on October 8-9 2013 from Eastern Colorado.

Charlie Summers / Andromeda galaxy and and sister galaxies M110 above and M32 below. Taken from eastern Colorado, USA, September 6-7 2013. Image taken with digital image stacking.

Mark Taylor / Lake at night with reflected stars of the Milky Way and silhouetted trees, Lassen Volcanic National Park, California, USA

Mark Taylor / Lake with reflected stars of the Milky Way and silhouetted trees, Lassen Volcanic National Park, California, USA

Mark Taylor / Sliding Stone or Moving Rock of Racetrack Playa, taken at night by moonlight, with the stars of the Milky Way in the background, Death Valley, California, USA

Mark Taylor / Sliding Stone or Moving Rock of Racetrack Playa, taken at night by moonlight, with the stars of the Milky Way in the background, Death Valley, California, USA