Director's Discretionary Program

Modeled on the HST approach, up to 5% of the total Chandra observing time will be reserved for CXC Director's Discretionary Time(DDT) observations. This allocation of time shall include unanticipated, non-peer reviewed TOOs.

Chandra Pitch Angle Restrictions:
Please note that new restrictions on the satellite pitch angle are in place. BEFORE SUBMITTING A REQUEST for either a TOO or DDT observation, please check the pitch angle for your desired target and observing date(s) to be sure your target can be observed. This can be done using the ObsVis tool either on the web or available for download.

• Information about DDT Observations

  • List of DDT Observations, Including Abstracts and Publication Information (Updated Daily)
    

• Proposing a New DDT Observation

  • Procedure concerning TOOs and DDT (Chapter 4 of the CfP)
    
  • Request for Observation (RPS):
    
    • Chandra Observing Proposal Information (TOOs and DDTs)
      
    • Help with DDT RPS form
    • Propose a DDT observation (RPS form)
      

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  Last modified: 04/05/07

  
  
  
  
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  The Chandra X-Ray Center (CXC) is operated for NASA by the Smithsonian Astrophysical Observatory. 60 Garden Street, Cambridge, MA 02138 USA.    Email: cxcweb@head.cfa.harvard.edu Smithsonian Institution, Copyright © 1998-2004. All rights reserved.

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