Chandra X-ray Observatory Stack acisfJ1743543m294508_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）观测数据来探测X射线源。此举使得该星表能够收录远较CSC 1.1版本暗弱的天体源。通过该方式合并得到的重叠观测数据集集合，被称为“堆叠（stack）”。