The HST Guide Star Catalog, Version GSC-ACT
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The Guide Star Catalog (GSC), which has been constructed to support the operational need of the Hubble Space Telescope contains nearly 19 million objects brighter than sixteenth...
导星星表（Guide Star Catalog, GSC）是为支撑哈勃空间望远镜（Hubble Space Telescope）的运行需求而构建的数据集，共收录近1900万个亮度高于16（原文表述未完整）的天体……
