Noctilucent clouds low on northeast horizon, amid pre-dawn twilight, July 6, 2011. Taken with Canon 5D MkII and 8mm Sigma fisheye lens for 25 seconds at f/4 and ISO 400. Taken at 3:43 am MDT. Latitude 50.9° N.
Circumpolar star trails taken on June 13, 2010 with the glow of perpetual twilight lighting the northern sky. This is a stack of 135 1-minute exposures at 1 second intervals (slightly longer gap toward the end for a battery change). Some noctilucent clouds visible in northeast. Taken with a Canon 5D MkII and 8mm Sigma fish-eye lens at f/4 and ISO 1600.
A composite stack of 75 2-minute exposures to create a night-long circumpolar star trail sequence but encompassing the entire sky using a fish-eye lens. Each exposure was 2 minutes at f/4 with a Canon 5D MkII at ISO 800, at 1s intervals. The image contains a bright meteor and a dual-satellite flare.
