Chandra X-ray Observatory Stack acisfJ2144487p382120_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采用经组合（即重叠）的钱德拉（Chandra）X射线天文台观测数据开展X射线源探测。该方案可使本星表收录显著暗于CSC 1.1的X射线源。以该方式组合的重叠观测数据集被称为‘stack（叠加组）’。