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.

03/24/22

Update: On May 19, a real-time procedure was executed to power on the HRC A-side electronics to collect additional diagnostic information. The procedure ran nominally and investigations continue on potential approaches for re-enabling the HRC for science observations.

Read the full update announcement as well as the Feb 20 update and the original announcement.

6/3/22

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.

5/20/22