Chandra X-ray Center

The Chandra X-ray Observatory continues to operate as usual during the COVID-19 pandemic.

CSC 2.0.1 Release

Release 2.0.1 of the Chandra Source Catalog updates variability properties to resolve two issues detected in release 2.0.

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11/24/20

Presentations Posted

Presentations from the Memorial Symposium to Honor Riccardo Giacconi have been posted.

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10/29/20

Release of the Sherpa 4.12.2 package for Python.

The Sherpa 4.12.2 package for Python was released on October 27, 2020.

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10/28/20

A Cosmic Amethyst in a Dying Star

Assessing The Habitability of Planets Around Old Red Dwarfs

Einstein's Theory of Relativity, Critical for GPS, Seen in Distant Stars

The Recipe for Powerful Quasar Jets

Sounds from Around the Milky Way

NASA's Chandra Opens Treasure Trove of Cosmic Delights

Debris from Stellar Explosion Not Slowed After 400 Years

Black Hole Fails to Do Its Job

Cases of Black Hole Mistaken Identity

X-rays From a Newborn Star Hint at Our Sun's Earliest Days

Proposer

Main Proposer Page

Chandra Proposal Software (CPS)

Observations and Schedules

Long Term Schedule

Short Term Schedule

Observation Scheduling and Support

Cycle Targets and Statistics

Special Calls for Proposals

Archive and Data Processing

ChaSeR: query Chandra observations

Chandra Data Archive

Footprint Service

Reprocessing Information

Chandra Source Catalog

TGCAT: Grating Data Catalog and Archive