Chandra X-ray Observatory Stack acisfJ1043559m593241_002

CSC uses combined (i.e. overlapping) Chandra observations for detecting X-ray sources. This allows the catalog to include significantly fainter sources than CSC 1.1. The set of overlapping observations that have been combined in this way is known as a "stack".CSC 采用经组合（即重叠）的钱德拉（Chandra）观测数据开展X射线源探测工作。这使得该源目录可收录比CSC 1.1版本暗得多的X射线源。以该方式组合的重叠观测集合被称为‘堆叠观测组（stack）’。