Chandra X-ray Observatory Stack acisfJ1507072m122443_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（Chandra）观测数据来探测X射线源（X-ray sources）。这使得该星表能够收录比CSC 1.1显著更暗的X射线源。以该方式组合的重叠观测集合被称为“堆叠（stack）”。