XMM-Newton Twenty-sixth Announcement of Opportunity (AO-26)
Anticipated Timeline

 

The Twenty-sixth Announcement of Opportunity (AO-26) is not yet open

The planned key milestones for the twenty-sixth XMM-Newton "Announcement of Opportunity" have been established. Within this AO-26 a new call to submit proposals for observations to be performed with the XMM-Newton observatory will be issued.

To be prepared for this, please find below the anticipated timeline:
 

The planned key milestones for AO-26 are:
  Announcement of Opportunity 19 August 2026
  Due date for Proposals 09 October 2026 (12:00 UT)
  Final OTAC approved programme mid December 2026
     
For approved proposals only:
  Start of Phase II proposal submission 12 January 2027
  Closure of Phase II proposal submission 29 January 2027
  Start of AO-26 observations May 2027