Cassiopeia and Double Cluster in Perseus 165mm telephoto lens at f/3.5 with Pentax 6x7 camera and Ektachrome E200 slide film and 18 minute exposure. Glow layer added in Photoshop to add glows around stars. Taken from home October 2003.
Cassiopeia and Perseus with Canon 5D MkII and Canon 35mm L-series lens, at f/4 for stack of 4 x 4 minutes at ISO 800, plus stack of 4 x 4 minutes with Kenko Softon filter for glowing stars. January 9, 2010.
The autumn constellations of Cassiopeia (centre) and Perseus (left) low in the north in the moonlight at Dinosaur Provincial Park, April 20, 2021. From this latitude of 51° N they skim low across the north on spring nights. The Moon was at first quarter phase off frame at top left. This is a stack of 4 x 20 seconds for the ground and a single 20-second exposure for the sky, all with the Sigma 24mm Art lens at f/2.8 adapted to the Canon EOS Ra camera at ISO 800. All untracked.
