Star clusters in Serpens and Ophiuchus.
A framing of the group of large binocular-class star clusters in Serpens and Ophiuchus: notably, the pairing of IC 4756 (left) and NGC 6633 (right) at upper left, sometimes known as the S-O Double Cluster, and the cluster IC 4665 at right above the bright star Cebalrai, or Beta Ophiuchi. At centre is the V-shaped asterism known as Poniatowski's Bull, from a defunct constellation created in 1777 by polish astronomer Marcin Poczobut to honor the king of Poland at the time. The grouping is also catalogued as Melotte 186 and Collinder 359. The asterism was marked as a constellation on Bode's Uranographia star atlas of 1801. The bright star at upper right is Rasalhague in Ophiuchus.
Size: 6300px × 4197px
Location: Alberta, Canada
Photo credit: © Alan Dyer/Stocktrek Images / Alamy / Afripics
License: Royalty Free
Model Released: No
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