Double Cluster - Blog Posts

We're Open Tonight!

The observatory will be open tonight, Sept. 27, 7:30 - 9:00 pm! We expect mostly clear skies, and to see Saturn, the Moon, the Ring Nebula, globular cluster M13, the Andromeda Galaxy, the Double Cluster, and the binary star systems Albireo and Mizar.

Here's a a nice picture of the Double Cluster in the constellation Perseus (we didn't take this picture, but it's similar to what you'd see through our telescopes - you won't see a lot of those dim background stars, though). [Image Credit and Copyright: Greg Polanski | Source: Astronomy Picture of the Day].

Perseus double cluster, had still some time left at the end of the night after the main sequence of photos and before dawn so I took the opportunity to capture about 25 minutes of photos of the double cluster. This is a pair of open clusters of stars (NGC 884 left and NGC 869 right), both are composed mostly of young blue giants and a few red giants in NGC 884. Both clusters have most likely formed from a single gas cloud and are only separated by a few hundred light years. This pair of cluster is relatively bright and can be viewed with the naked eye or a pair of binoculars in dark locations, in those cases, the clusters appear as nebulous region, with a couple of stars resolved with binoculars.