News by Date
2024     2023     2022     2021
2020     2019     2018     2017
2016     2015     2014     2013
2012     2011     2010     2009
2008     2007     2006     2005
2004     2003     2002     2001
2000     1999     1998     1997
News by Category
Solar System
Stars
White Dwarfs
Supernovas
Neutron Stars
Black Holes
Milky Way Galaxy
Normal Galaxies
Quasars
Galaxy Clusters
Cosmology/Deep Field
Miscellaneous
Press Resources
Status Reports
Press Advisories
Image Releases
Release Guidelines
Image Use Policy
NASA TV
Biographies/Interviews
Web Shortcuts
Chandra Blog
RSS Feed
Chronicle
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 25 December 2015 9.00am EST

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

A flight software patch was uplinked on on Dec 23 which updates the safing action SCS-78 to include commands to power-on side-A of the valve-drive electronics after it has been powered-off. This patch ensures that Chandra will have the capability for unloading angular momentum follwing a safe-mode transition in which the redundant on-board computer fails to start-up nominally. Real-time procedures were executed on Dec 24 to dump OBC-A memory as a follow-up to the patch. The dump will be used to update the baseline memory image maintained on the ground

An aspect camera dark current calibration was performed from the on-board loads on Dec 21. An assessment of the data indicates nominal aspect camera performance and that the number of CCD warm pixels is increasing at the expected rate.

A Chandra press release was issued on Dec 21 describing observations of a gigantic tail of X-ray emission that has been found behind a galaxy plowing through the galaxy cluster Zwicky 8338. With a length of at least 250,000 light years, this is likely the largest such tail ever detected. Scientists used Chandra to discover the tail, study its properties and learn how this X-ray tail affects its cluster environment. For details see: http://chandra.si.edu/press/15_releases/press_122115.html

The schedule of targets for the next two weeks is shown below and includes an observation of Cyg X-1, which was accepted as a Target of Opportunity on Dec 9 and is coordinated with NuSTAR, an observation of PSN J10520833+3256394, which was accepted as a Target of Opportunity on Dec 22, observations of SDSS J0859+0426, 2MASS J08055713+0417035, SDSS J1509+0304, SDSS J1019+2119, and SDSS J1104+4345 coordinated with ground-based observatories, and an observation of 2MASX J04595677+3502536 coordinated with NuSTAR.



------------------------------------------
        Radiation Belts                     DEC 27
        NGC7469                ACIS-S/HETG
        2MASXJ04595677+3502    ACIS-S
        J0844                  ACIS-S
        SDSSJ1509+0304         ACIS-S       Dec 28
        2MASSJ08055713+0417    ACIS-S
        NGC2617                ACIS-S/HETG
        SDSSJ1019+2119         ACIS-S
        NGC7469                ACIS-S/HETG  Dec 29
        Radiation Belts
        NGC7469                ACIS-S/HETG
        PSZ2G170.98+39.45      ACIS-I       Dec 30
        NGC2617                ACIS-S/HETG
        SMus                   ACIS-I       Dec 31
        NGC7469                ACIS-S/HETG
        Radiation Belts                     Jan  1
        NGC7469                ACIS-S/HETG
        NGC2693                ACIS-S
        NGC2617                ACIS-S/HETG  Jan  2
        SDSSJ1104+4345         ACIS-S       Jan  3
        NGC7469                ACIS-S/HETG
        Radiation Belts                     Jan  4
        Abell623               ACIS-S
        PSNJ10520833+325639    ACIS-S
        SDSSJ0859+0426         ACIS-S
        PSZ2G224.01-11.14      ACIS-I
        NGC7469                ACIS-S/HETG
        ZWCL1478               ACIS-I       Jan  5
        Zw121.071              ACIS-S
        HZ43 (2 obs)           HRC-I/LETG
        CygX-1                 ACIS-S/HETG
        Radiation Belts                     Jan  6
        NGC7469                ACIS-S/HETG
        HD191612               ACIS-S/HETG  Jan  7
        CSWA30                 ACIS-S
        Abell623               ACIS-S
        SDSSJ085953.33+1310    ACIS-S
        HZ43                   HRC-S/LETG
        RMJ164325.4+132235.    ACIS-I       Jan  8
        SDSSJ090547.34+3747    ACIS-S
        HD191612               ACIS-S/HETG
        Radiation Belts                     Jan  9
        LMCX-2                 ACIS-S/HETG
        2MASXJ08384815+0407    ACIS-S
        SDSSJ084135.08+0101    ACIS-S       Jan 10
        LMCX-2                 ACIS-S/HETG

------------------------------------------

All spacecraft subsystems continued to support nominal operations.

Return to Status Reports