This upgrade includes the following items:

• ACIS T_GAIN file set covering 2022 through 2024
• HRC-S QE Uniformity file set version N0022

See the full announcement for more detail.

8/19/25

Lists of targets recommended by the Cycle 27 Peer Review are now posted.

This page includes separate lists of:

• recommended time on joint partner observatories,
• recommended programs that use Chandra time from multiple cycles,
• recommended Large Project and Very Large Project proposals, and
• overall statistics of the Cycle 27 program.

7/29/25

A new statement by the Chandra Users’ Committee (CUC) regarding the proposed cuts to NASA astrophysics has been posted on the CUC website.

Previous statements from the CUC can be found at https://cxc.harvard.edu/cdo/cuc/meetings.html.

5/21/25