英仙座双星团
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NGC884
天文·每日一图
英仙双星团
2023年7月7日 The Double Cluster in Perseus Image Credit & Copyright: Mårten Frosth 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