XMM-Newton Science Analysis System . ... Meta Index / Home Page Further enhancements may be necessary in the light of in-flight experience, eg. location of the source within the camera field-of-view, to avoid CCD boundaries) . the nearest-neighbour distance threshold may need to be a function of source brightness, to alleviate problems with multiple detection of bright sources (this depends on the performance of the source detection software) . XMM-Newton SOC/SSC -- 2005-08-16 ...