Chandra X-ray Observatory Stack acisfJ1632389p053545_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".钱德拉源星表（Chandra Source Catalog，简称CSC）采用联合（即重叠）的钱德拉观测数据开展X射线源探测。该方案可使本星表收录比CSC 1.1暗得多的源。以该方式联合的重叠观测数据集被称为堆叠（stack）。