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.
Getting Hard Copies of Images
Ways to obtain photos, slides, etc of Chandra images.
Operations CXO Status Report

Friday 5 July 2019 9.00am EDT

The Chandra plan of observations released last week will be interrupted Sunday to incorporate observations of 4U 1820-30, which was accepted as a Director's Discretionary Time Target of Opportunity on Jul 3. Scheduled observations of GCRGap4 and GCRGap5 were impacted by the replan and will be rescheduled in a future week.

A real-time procedure was executed on Jul 3 to perform a routine self-check of the Electrical Interface Assembly (EIA) Sequencer. Another real-time procedure was executed on Jul 4 to perform a full-frame dark current readout of the Aspect Camera Assembly CCD.

A Chandra photo release was issued on Jul 3 describing Chandra observations of 5 gravitationally lensed quasars. The results showed that one of the black holes, in the lensed quasar called the "Einstein Cross," is spinning at, or almost at, the maximum rate possible. The four other black holes in the sample are spinning, on average, at about half this maximum rate. For details see:

The schedule of targets for the next week is shown below and includes an observation of TW Hya which is coordinated with HST, an observation of MAXI J1348-630, which is a followup to a Target of Opportunity which was accepted on Jun 10 and is coordinated with NuStar, and observations of 4U 1820-30 which was accepted as a Director's Discretionary Time Target of Opportunity on Jul 3.

        MAXIJ1348-630          ACIS-S/HETG  Jul  7
        4U1820-30              ACIS-S/HETG
        TWHya                  HRC-I /HETG
        4U1820-30              ACIS-S/HETG  Jul  8
        G1.9+0.3               ACIS-S
        Radiation Belts                     Jul  9
        PSRJ1400-6325          ACIS-S
        PS1-10jh               ACIS-S
        MKN421                 ACIS-S/LETG  Jul 10
        MKN421                 ACIS-S/LETG
        Radiation Belts                     Jul 11
        MKN421                 ACIS-S/LETG
        Jupiter                HRC-I
        G1.9+0.3               ACIS-S       Jul 13
        Jupiter                HRC-I
        Off-field3             ACIS-I
        MRC2035-203            ACIS-S       Jul 14
        Radiation Belts


All spacecraft subsystems continued to support nominal operations.

Return to Status Reports