The Double Cluster (Caldwell 14) is the common name for the naked-eye open clusters NGC884 and NGC869 (often designated Chi Persei and H Persei, respectively), which are close together in the constellation Perseus.
Athens
Other popular names in astronomy for the Hercules Globular cluster are : Messier 13 (M13) and NGC 6205. M13 was discovered by Edmond Halley in 1714, and catalogued by Charles Messier on June 1, 1764.