XMM-Newton Science Analysis System
omdetect (omdetect-5.41) [xmmsas_20211130_0941-20.0.0]
Omdetect will find sources on an image using both a peak-finding and connected-pixel
algorithm. The former will mainly detect “point” sources and the latter “extended” ones.
The peak-finding algorithm is used first to try to locate all point sources, in order of decreasing brightness.
This algorithm mainly overcomes problems with modular-8 patterns around bright sources and scattered
light features. When the detection algorithms have finished, photometry is performed on the sources and then
the flagging algorithms are run.
XMM-Newton SOC -- 2021-11-30