The Double Cluster

Double Cluster

Constellation Perseus
Right ascension 2h 20m
Declination 57° 08′
Distance 7.5 kly (2300 Pc)
Apparent magnitude (V) 3.7 and 3.8
Apparent dimensions (V) 60′

Hipparchus, a Greek astronomer, cataloged the object (a patch of light in Perseus) as early as 130 B.C. However, the true nature of the Double Cluster wasn’t discovered until the invention of the telescope many centuries later. In the early 19th century William Herschel was the first to recognize the object as two separate clusters. The Double Cluster is not included in Messier's catalog, but is included in the Caldwell catalogue of popular deep-sky objects not in Messier.(Wikipedia)

Dob 10" F.L.1200/f4.7 S/W
T/S 30mm plossl F.O.V.70°
Mammari

Thanks for looking
Marios