The New General Catalogue of Nebulae and Clusters of Stars (abbreviated as NGC) is a catalogue of deep-sky objects compiled by John Louis Emil Dreyer in 1888. The NGC contains 7,840 objects, known as the NGC objects. It is one of the largest comprehensive catalogues, as it includes all types of deep space objects, including galaxies, star clusters, emission nebulae and absorption nebulae.
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NGC 6380
NGC 6380 is a globular cluster located in the constellation Scorpius. It was originally discovered by James Dunlop in 1826, and he named it Dun 538. Eight years later, in 1834, it was independently rediscovered by John Herschel and he named it H 3688. The cluster was re-rediscovered in 1959 by Paris Pişmiş, who catalogued it as Tonantzintla 1 — and referred to it as Pişmiş 25. Until the 1950s NGC 6380 was thought to be an open cluster. It was A. D. Thackeray who realised that it was in fact a globular cluster. Nowadays, this cluster is reliably recognised in widely available catalogues as a globular cluster, and referred to simply as NGC 6380.
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Wikipedia Page: NGC 6380
NGC 6380 at In-The-Sky website