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.
Cassiopeia with 165mm telephoto lens at f/3.5 with Pentax 6x7 camera. Ektachrome E200 film. About 18 minute exposure. Various open clusters such as M103, NGC457, NGC7789, M52 and others in Cass well shown and resolved. NGC282 and Bubble Nebulas also shown. Taken from home October 2003 under excellent skies. Tracked but not guided. Slight trailing in RA.
Cassiopeia; for stack of 4 x 5 minute exposures with 35mm L-series lens at f/2.8 and Canon 20Da camera at ISO 400. Oriented in true N-S orientation. Contains NGC 7822 and IC 1795-1848 areas of nebulosity. Includes Double Cluster and northern Perseus. Glow layer added to soften stars.
