Chandra CalDB version 4.9.7 released to the public

This upgrade includes the following items:
* ACIS T_GAIN updates affecting recent OBS_IDs (since 2021-05-02T12:00:00).
* ACIS focal plane temperature (FP_TEMP) boundary condition upper and lower limit changes

Read the full announcement.


HRC Anomaly: Update

Update: On February 20, Chandra resumed a full schedule of science observations with ACIS. The team has switched to using the ACIS detector for monitoring the radiation environment for the spacecraft.

Read the full update announcement.

On Wednesday, 9 February 2022, Chandra telemetry showed the HRC to be in an anomalous state. Read the original announcement.


Release of the Sherpa 4.14.1 package for Python

The release of Sherpa includes various documentation updates, bug fixes, and infrastructure changes. Click here for detailed release notes and for installation instructions click here.

Read the full announcement.