Stock 2/Double Cluster - Open clusters in Perseus and Cassiopeia
The Double Cluster
  • Description: The winter Milky Way contains many open star clusters. Pretty obvious in the bottom of this image is the Double Cluster, a visual treat in any telescope or binoculars. Less obvious in the top right of this photo is cluster Stock 2. This is a very large open cluster a full degree in size or about double the size of the moon, about 50 stars. While it may not show well and is getting lost in the background stars here, it looks great at low power in a scope or in binoculars. Located near the centre of this photo is a smaller cluster known as Basel 10. It consists of only 12 stars and is tiny compared to the 3 other dominant clusters in this photo.

    The dark nebula to the right of the Double Cluster (aka NGC's 884/869) is Barnard 201.

  • Camera: SBIG STF-8300M at -1C
  • Filters: Baader RGB filter set
  • Scope: William Optics RedCat 51 XL refractor
  • Exposure: 3 x 10 minutes for red, blue and green
  • Location: near Cayley, Alberta
  • Date: November 7th, 2021
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