HRC Anomaly: Update

Update: The Chandra science and engineering teams are preparing to return the HRC to use for science observations.

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For more information, read the 9/2/22 and the 2/20/22 updates and the original announcement.


Cycle 25 Call for Proposals

The CXC is pleased to announce the release of the Chandra Cycle 25 Call for Proposals (CfP). The Call for Proposals, Proposers' Observatory Guide (POG), proposal planning software, and general information are posted on the "Proposer" web page.

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CIAO 4.15, DS9 8.4, MARX 5.5.2 released

The Chandra X-ray Center (CXC) is pleased to announce that version 4.15 of CIAO is now available. CIAO 4.15 includes version 8.4 of SAOImage DS9. DS9 can also be downloaded and installed as a stand-alone application.Version 5.5.2 of MARX (the Chandra on-orbit performance simulator) can be installed as part of the CIAO installation or separately.

Read the full announcement.