Chandra X-ray Observatory Stack hrcfJ0055103m373840_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 采用合并（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。这使得该星表可收录远较CSC 1.1版本暗弱的X射线源。以该方式合并的重叠观测数据集，被称为“堆叠（stack）”。