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

Friday 12 February 2016 9.00am EST

During the last week Chandra completed the observing schedule as planned.

A real-time procedure was executed on Feb 11 to patch a data value in non-checksummed memory of the Control Processing Electronics (CPE). The patch to CPE memory was performed in order to minimize the time Chandra spends in attitude hold at the start of a Safe Mode transition. Unnecessary time spent in attitude hold delays entry into the desired orientation and had occurred during the past three Safe Mode transitions.

Of note this week was the release on Feb 9 of CIAO 4.8.1. The primary changes introduced in the patch are a fix to acis_process_events and an upgrade to version 7.4 of SAOImage DS9. For details see:

The schedule of targets for the next week is shown below and includes an observation of ASASSN-15lh, which is a follow-up Director's Discretionary Time Target of Opportunity accepted on Oct 19, and observations of SDSS J1228+3414, SDSS J1638+1151, and SDSS J1245+0156 coordinated with ground-based observatories.

        Radiation Belts                     Feb 15
        SPT-CLJ0640-5113       ACIS-I
        SDSSJ1228+3414         ACIS-S
        GRB130427A             ACIS-S
        NGC4051                ACIS-S/HETG  Feb 16
        SDSSJ1638+1151         ACIS-S       Feb 17
        GRB130427A             ACIS-S
        Radiation Belts                     Feb 18
        SPT-CLJ0640-5113       ACIS-I
        1642+690               ACIS-S
        NGC4051                ACIS-S/HETG
        1642+690               ACIS-S       Feb 19
        Radiation Belts                     Feb 20
        SPT-CLJ0607-4448       ACIS-I
        ASASSN-15lh            ACIS-S
        SDSSJ1245+0156         ACIS-S       Feb 21
        NGC4051                ACIS-S/HETG
        ESO575-IG016NED02      ACIS-S       Feb 22
        SPT-CLJ0607-4448       ACIS-I
        Radiation Belts


All spacecraft subsystems continued to support nominal operations.

Return to Status Reports