XMM-Newton Serendipitous Source Catalogue 4XMM-DR11

Sky surveys produce enormous quantities of data on extensive regions of the sky. The easiest way to access this information is through catalogues of standardised data products....

巡天观测（Sky surveys）能够在广袤天区范围内产生海量观测数据。获取此类信息的最便捷方式，便是依托标准化数据产品目录。