UCL Department of Space and Climate Physics



MSSL is involved in two XMM-Newton instruments: the OM and RGS. This page gives information about the OM serendipitous source catalogue, XMM-SUSS, a joint project between MSSL and ESAC.


10 December 1999

MSSL is involved in several aspects of XMM-Newton, in particular the Optical Monitor (OM) and the Remote Grating Spectrometer (RGS). Please see the XMM-Newton, OM and RGS for further information on the instrumentation and projects.

The XMM-OM SUSS catalogues

The XMM-OM Serendipitous Ultra-violet Source Survey (XMM-SUSS) is a catalogue of Optical and UV sources detected serendipitously by the Optical Monitor (OM) on-board the European Space Agency's (ESA's) XMM-Newton observatory. The data were processed at the European Space Astronomy Centre (ESAC, Madrid, Spain) and at the University College London's (UCL's) Mullard Space Science Laboratory (MSSL) on behalf of ESA and is a partner resource to the 4XMM serendipitous X-ray source catalogue.

NEW for 2021:  



This XMM-SUSS5.0 catalogue is the fifth version of the XMM-OM Serendipitous Ultra-violet Source Survey, released in December 2020. The data, cover the period March 2000 to February 2020. 

XMM-SUSS5.0 includes: 

  • 10,628 observations 
  • 8,863,922 individual source entries 
  • 5,965,434 unique sources
  • 1,120,754 sources with repeated observations 
Supplementary catalogue

The catalogue using readout streak photometry for sources too bright to be included in XMM-SUSS3 is also available. 


Other useful links: