News by Date
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
Chandra Mobile
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
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 15 October 1999 4.00pm EST

During the last 24 hours Chandra has continued with the GTO Deep Field observation with ACIS-I. Real-time monitoring of the data from the observation indicated that a correction was required for an ACIS parameter block, and the corrected parameter block was uplinked during an extended real-time contact at 12.30PM 10/15. Additional monitoring of the ACIS data also indicated an increased number of parity errors from the front-end-processor (FEP) 0, similar to the behavior observed on 10/13. This reoccurrence suggests a cause other than an SEU and further assessment is in progress.

The next mission schedule was reviewed and approved on 10/14 and will be uplinked prior to the end of the current schedule at 12AM 10/16. During the next 24 hours the spacecraft will pass through the radiation belts, perform a post-belt ACIS CTI measurement and continue with GTO observations.

The spacecraft systems continued to operate nominally.





Return to Status Reports