A telephoto lens image of the spiral galaxy Messier 51 in Canes Venatici below the handle of the Big Dipper. This is shot to simulate the field of view of binoculars for illustration purposes. The star at top left is Alkaid in Ursa Major. This is a stack of 8 x 1-minute exposures with the 200mm lens at f/2.8 and Canon 6D MkII at ISO 800, tracked but unguided on the Mach 1 mount, on April 28, 2019.
M52 and Bubble Nebula area with 5-inch AP apo at f/4.5 with telecompressor/field flattener and Canon 20Da camera. Stack of four 8-minute exposures. Taken from home Nov. 20, 2006 under very good conditions.
Messier 52 open cluster in Cassiopeia (upper left) and NGC 7635, the Bubble Nebula (centre). Taken from home, Oct 7, 2013 with TMB 92mm apo refractor and Borg 0.85x flattener/reducer for f/4.8 and Canon 5D MkII (filter modified) at ISO 800 for stack of 5 x 15 minute exposures.
