Berkeley 47, Open Star Cluster
In the constellation "Sagitta" at a distance of 4,600 light-years one can find the open star cluster "Berkeley 47", whose age is given with 160 million years. The
apparent size is about 3.5', so the true diameter is 4.7 light-years. The star cluster is located with a gal. Latitude of -0.058° almost exactly in the galactic
plane. The cluster is reddened by dust masses in front of it.
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Berkeley 47 is located within a wonderful group of stars and is therefore a beautiful sight in the telescope. At 120x the cluster is easily visible as a nebulous patch
with indirect vision.
The cluster looks most beautiful at a magnification of 270x. About 15 faint individual stars of 15mag and below are visible. Two brighter stars are located at the
northern edge. The background appears grainy, the cluster as a whole roundish. A really nice object!
