NGC 663 (left of centre) and M103 (bottom right) open clusters in Cassiopeia. NGC 654 is at upper centre and NGC 659 bottom centre. Faint cluster IC 166 is at far left. Taken Nov 5, 2010 with 105mm A&M apo refractor at f/5 with Borg .85x flattener/reducer and Canon 5DMkII at ISO 800 for stack of 4 x 10 minute exposures, Median combined. Used Celestron CGEM mount and Sky-Watcher SynGuider on William Optics 66mm guidescope. All seemed to work well.
Clusters in Cassiopeia: upper left: NGC 654; middle left: NGC 663; lower left: NGC 659; lower right: M103.
The heart of the Coma-Virgo galaxy cluster known as Markarian’s Chain, with bright M84 and M86 at right of centre and M87 at lower left. The rest of the chain and group are made of fainter NGC and IC galaxies. Galaxies to about 15th magnitude are recorded. This is a stack of 12 x 8-minute exposures with the Canon EOS Ra at ISO 800 and SharpStar 100QII apo astrograph at f/5.8. Stacked and aligned in Photoshop. Taken from home March 25, 2020. Starizona Galaxy Enhance action applied.
