Proposer's Documents and Manuals
Documentation to assist XMM-Newton Proposers can be found here: e.g. Users Handbook
Details regarding the 20th announcement of opportunity (AO-20)
Results of the XMM-Newton Observation Time Allocation Committee including the latest results of AO-20.
Details regarding the 21st announcement of opportunity (AO-21).
Target Visibility Tool
The XMM-Newton Target Visibility Checker
Target Search Tool
Search planned & performed observations with the XMM-Newton Observation Lokator