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Also known as h and χ Persei, the Double Cluster (comprising NGC 869 and NGC 884) is a "line of sight" pairing in the constellation in Perseus, though actually they are only a few hundred light years apart. The Double Cluster in the constellation Perseus is a breathtaking pair of star clusters, each containing supergiant suns. The Double Cluster represents the jewelled handle of Perseus's sword. They are described as being an "awe-inspiring" and "breathtaking" sight, and are often cited as a target in astronomy observer's guides. Also visible to the unaided eye from dark sky areas, it was cataloged in 130 BC by Greek astronomer Hipparchus. Double Cluster. 117572 Reproduction of the work by third-parties is expressly forbidden without the consent of the copyright holder. In the early 19th century William Herschel was the first to recognize the object as two separate clusters. 6. A rich part of the Milky Way runs through Perseus, making it an attractive constellation for binocular users. Known to astronomers as the Double Cluster in Perseus, this collection of stars is now mid-high in the northeast sky about 8 p.m. and although … The Double Cluster is located in the far northwestern part of Perseus, close to the border with Cassiopeia. The clusters are over 7,000 light years distant toward the constellation of Perseus, but are separated by only hundreds of light years. Although their discovery surely predates recorded history, the Greek astronomer Hipparchus notably cataloged the double cluster. A Double Star Cluster in Perseus. Registered charity no. A Double Star Cluster in Perseus. It is located about 5 degrees west of Algol. NGC 869 has a mass of 3700 solar masses and NGC 884 2800 solar masses; so the total mass for the complex is estimated in excess of 20,000 solar masses when including an extensive halo of stars. Forum Star Clusters in Perseus Constellation. Both visible with the naked eye, NGC 869 and NGC 884 lie at a … 29 x 180 seconds at ISO 1600. The Double Cluster, or Caldwell 14, is the name for two open clusters – NGC 869 and NGC 884 – located close together in Perseus constellation. The clusters are also blueshifted, with NGC 869 approaching Earth at a speed of 39 km/s (24 mi/s) and NGC 884 approaching at a similar speed of 38 km/s (24 mi/s). [2] Based on their individual stars, the clusters are relatively young, both 12.8 million years old. Both clusters are surrounded with a very extensive halo of stars. Perseus is represented by brandishing his sword in his right hand, marked by the twin star clusters NGC 869 and NGC 884, while in his left hand he holds the head of Medusa, marked by the star Beta Persei, better known as Algol. [7] Bayer's Uranometria chart for Perseus does not show them as nebulous objects, but his chart for Cassiopeia does, and they are described as Nebulosa Duplex in Schiller's Coelum Stellatum Christianum, which was assembled with Bayer's help. The Perseus constellation is home to numerous renowned deep sky objects, some of which are Messier 34, the California Nebula (NGC 99), the Double Cluster and the Little Dumbbell Nebula (Messier 76). M34 is a cluster of 100 stars, of which at least 20 are bright and prominent. The Double Cluster (also known as Caldwell 14) consists of the open clusters NGC 869 and NGC 884 (often designated h Persei and χ Persei, respectively), which are close together in the constellation Perseus. Also known as h and χ Persei, the Double Cluster (comprising NGC 869 and NGC 884) is a "line of sight" pairing in the constellation in Perseus, though actually they are only a few hundred light years apart. 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