A telephoto lens image of the open star cluster Messier 67 in Cancer. This is shot to simulate the field of view of binoculars for illustration purposes. This is a stack of 7 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 and taken in deep twilight.
M67 star cluster in Cancer. This is a stack of 5 x 3 minute exposures at ISO 1600 with the Canon 7D on the TMB 92mm apo refractor with Borg 0.85x reducer/flattener for f/4.5. Taken on a slightly hazy night, April 22, 2011 using AP 600E mount and SG4 autoguider. Same scale as M44 shot taken the same night (M44 92mm 7D).
Sagitta constellation with M71 cluster Thru Vixen 108DD astrograph at f/5 with Pentax 67 body and Fujichrome 400F slide film. 540mm focal length with about 7.5° wide field. Exposure about 20 minutes long taken in moonlight from rising waning Moon. Thus the blue sky which has been emphasized rather than neutralized. Taken July 2003 from home.
