Chandra X-ray Observatory Stack acisfJ1611051p084452_001

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".钱德拉源目录（CSC）采用经组合（即重叠）的钱德拉X射线天文台（Chandra）观测数据开展X射线源探测工作。相较于CSC 1.1版本，该目录可收录显著更暗弱的X射线源。以该方式组合的重叠观测集合被称为"叠加组（stack）"。