It is an open cluster located in the constellation of Cassiopeia. It is a small and remote cluster at a distance of about 10,000 light years and contains around 100 members. It has an estimated age of around 25 million years.
Open cluster NGC 6939 located in Cepheus. Located some 3,800+ light years away and an older cluster estimated at over 1 billion years of age.
NGC 7789 is an open cluster located in Cassiopeia. Often call Caroline's Rose or the White Rose, it was discovered by Caroline Herschel in 1783. It's estimated age is around 1.6 billion years.
NGC 7023 is a refection nebula, blue light from central hot young star SAO 19158 reflects off the dust grains illuminating the nebula. The nebula spans some 6 light years across. Spent some 33 hours imaging this object over August and September 2019.
Star Clouds of Andromeda featuring NGC 206 in the center, which is an OB association of hot O and B type stars numbering over 300 and stretching some 4,000 light years.
NGC6940 is an open cluster located in Vulpecula. Some what difficult to see the cluster against the rich background of stars, the actual cluster contains several hundred members. Estimated age is 700+ million years and at distance of 2,500 light years.
Open cluster located in the constellation of Cepheus. Estimated age of 6+ billion years, most open clusters drift apart after only a few million years. It lies above the plane of the Milky Way, and located further out than our Sun which may account for its longevity.
Open Cluster NGC2423 located in Puppis located about 2,500 light years away. At least one exo-planet has been confirmed orbiting a the red giant star NGC2423-3 with a mass of 10 times of Jupiter.
NGC 2539, an open cluster in Puppis. Estimated age of the cluster is 370 million years and contains several hundred possible members. The cluster lies about 4,400 light years away, the brighter star is 19 Puppis a multiple star system with six reported components The primary being a 4.7 magnitude yellow giant, and is a foreground star at 177 light years.