An XMM PV survey of the Lockman Hole

The Lockman Hole provides the deepest Xray survey done with ROSAT.About 80 Xray sources have been uniquely optically identified.It is also covered by deep Radio, ISO, ASCA adn BeppoSAX surveys.With 150 ksec XMM PV observation, small systematics errors in the attitudesolution, the platescale, systematic position errors and the pointspreadfunction can all be measured. This will also give the first experimentaldetermination of the XMM opportunity to identify confusion limit. This multiwavelength dataset will also provide a unique opportunity to identify thepopulation of obscured AGNs which is thought to provide the bulk of the energydensity in the Xray background and possibly a significant fraction of the FIR background truncated!, Please see actual data for full text [truncated!, Please see actual data for full text]