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Call for Proposals, Cycle 22

Note: Proposal deadline has moved to April 2, 6pm EDT.

The CXC is pleased to announce the release of the Cycle 22 Call for Proposals (CfP) inviting scientists to participate in the Chandra X-ray Observatory's science program.
Last Updated 2/24/2020.

WHAT'S NEW | Latest CfP (02/24/2020)

Updated Cycle 22 CfP Release

The CXC issued an updated Cycle 22 CfP on Feb 24, 2020.

Summary of Changes made to Cycle 22 CfP

Original Cycle 22 CfP (12/17/2019)

Previous Cycles' CfPs

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