Chandra X-ray Observatory Stack acisfJ2344014p260256_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".CSC采用组合（即重叠）的钱德拉X射线天文台（Chandra X-ray Observatory）观测数据开展X射线源探测工作。这使得该星表能够收录比CSC 1.1版本暗得多的X射线源。通过此种方式组合的重叠观测数据集被称为“堆叠观测集（stack）”。