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 29 April 2005 7.00am EDT

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

A real-time procedure was completed on 27 April to uplink a software patch to modify the Stored Command Sequences (SCS) 107 and 84. The patch provides the capability to transition to Normal Sun Mode (NSM) following execution of the Science Instrument safing actions (SCS 107) in response to a high radiation event. The capability will be used to ensure a favorable thermal attitude for cases when stopping the loads would violate a new propulsion line thermal constraint.

A Chandra press release was issued on 28 April announcing the first X-ray image of a pair of interacting stars. The observation, of Mira AB, made use of Chandra's superb angular resolution and allowed the observation of an X-ray outburst from the system's giant star providing evidence that a bridge of hot matter is streaming between the two stars. For details see:

The schedule of targets for the next week is shown below and includes a TOO observation of RXJ0513.9-6951 and a DDT observation of J1638-4725.

Radiation Belts May 2 RXJ0513.9-6951 HRC-S/LETG May 3 RCS2318.5+0034 ACIS-S RGBJ2229+3057 ACIS-S RGBJ2256+2618 ACIS-S May 4 PSR B1800-21 ACIS-S J1638-4725 ACIS-S M87 ACIS-S M87 ACIS-I Radiation Belts M87 ACIS-I May 5 Radiation Belts May 7 NGC 3351 ACIS-S May 8 NGC4365 ACIS-S


All spacecraft subsystems continued to support nominal operations.

Return to Status Reports