News by Date
News by Category
Solar System
White Dwarfs
Neutron Stars
Black Holes
Milky Way Galaxy
Normal Galaxies
Galaxy Clusters
Cosmology/Deep Field
Press Resources
Status Reports
Press Advisories
Image Releases
Release Guidelines
Image Use Policy
Web Shortcuts
Chandra Blog
RSS Feed
Email Newsletter
News & Noteworthy
Image Use Policy
Questions & Answers
Glossary of Terms
Download Guide
Get Adobe Reader
Chandra @ NASA
Visit the Chandra pages at the NASA portal (opens in new window)
Image Use
Image Use Policy & Request Form
Guidelines for utilizing images, applets, movies, and animations featured in this Web Site.
Operations CXO Status Report

Sunday 6 September 2020 6.00pm EDT

During the last week Chandra science observations continued to be suspended while the team develops and executes procedures to swap the High Resolution Camera (HRC) instrument to its B-side electronics.

On Aug 31 a real-time procedure was executed to turn on the HRC B-side 5V, +/-15V and 24V power supplies and configure the instrument for subsequent operation. Another real-time procedure was executed to update a Control Processing Electronics (CPE) parameter to prevent an extended attitude hold condition on the next Safe Mode transition. On Sep 2 a real-time procedure was executed to disable the FA6 heater which had previously been enabled in order to maintain the HRC thermal environment while the power supplies were off. On Sep 3 a real-time procedure was executed to uplink a flight software patch to reconfigure the on-board computer to use the B-side HRC channels. Additional real-time procedures were executed on Sep 4 to dump OBC-A and -B memory as a follow-up to the flight software patch. The dump will be used to update the baseline memory image maintained on the ground.

Real-time procedures were executed during each ground contact to reset the DSN Outage Dead Man Load.

Of note this week was the announcement on Aug 31 that Dr. Patrick Slane of the Center for Astrophysics | Harvard & Smithsonian has been named the next Director of the Chandra X-ray Center, which controls science and flight operations for NASA's Chandra X-ray Observatory.

A Chandra image release was issued on Sep 2 describing a montage of images showcasing the combination of data from telescopes that collect different kinds of light. This "multiwavelength" approach to astronomy is crucial to getting a complete understanding of objects in space. NASA's Chandra X-ray Observatory provides the X-ray view of the objects in this collection. For details see:

The current unavailability of the HRC instrument prevented nominal operations last week.

Return to Status Reports