Circumpolar star trails taken from 11:45 pm to 3:30 am, July 5/5, 2011, using 8mm Sigma fish eye lens and Canon 5D MkII camera, for stack of 275 exposures, each 40 seconds at f/4 and ISO 1000. Stacked with Chris Schur's Photoshop Action. There are also noctilucent clouds and aurora in the scene, looking north from home in southern Alberta, latitude +51°.
The Big Dipper in a long exposure, trailing over Peyto Lake, Banff, Alberta in a film shot from the 1990s. A single long exposure about 20 minutes on slow Fuji Velvia film.
Big Dipper trailing behind Castle Mountain, Banff, Alberta. Taken with 55mm lens at f/8 anf 16 minute exposure, on Fujichrome 100F slide film with Pentax 6x7 camera. Full moonlight provided th illumination. Taken from Castle Cliffs viewpoint on Bow Valley Parkway, Aug. 1, 2004.
