NGC 884

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英仙双星团

2021年10月8日 The Double Cluster in Perseus Image Credit & Copyright: Jack Groves Explanation: This pretty starfield spans about three full moons (1.5 degrees) across the heroic northern constellation of Perseus. It holds the famous pair of open star clusters, h and Chi Persei. Also cataloged as N […]

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英仙座双星团

2020年11月18日 A Double Star Cluster in Perseus Image Credit & Copyright: Greg Polanski Explanation: Most star clusters are singularly impressive. Open clusters NGC 869 and NGC 884, however, could be considered doubly impressive. Also known as “h and chi Persei”, this unusual double cl

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