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 16 November 2001 12.00pm EST

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

A real-time procedure was completed on 12 Nov to uplink a flight software patch to decrease the momentum unloading dead-zone from 6 to 2 ft-lb-sec. The momentum auto-unload threshold was also commanded from 27.9 to 31.9 ft-lb-sec. The new values were tested on-orbit by pre-loading momentum to a value above the new threshold and verifying that auto-unloading reduced the momentum to the new dead-zone value. The procedure was completed with expected results. As noted last week, the new values will expand the momentum envelope and result in a reduced number of Momentum Unloading Propulsion System warm start firings. A real-time procedure was also completed on Nov 12 to update the on-board ephemeris.

The schedule of observations for the coming week is shown below and includes the completion of the current series of long observations of the Hubble Deep Field North. Note that the maneuvers and commanding associated with the Leonid meteor and the first observation following the peak are included at the end of last weeks schedule. The flight engineering team will be in place this Sunday to monitor Chandra through the Leonid event.

2MASSJ222202+1952       ACIS-I       Nov 19
M31 Nucleus             ACIS-I
M31 (5 obs)             HRC-I
1RXSJ1153+5456          HRC-S
V 410 TAU               ACIS-S
HDF-N                   ACIS-I
Radiation Belts                      Nov 20
HDF-N                   ACIS-I       Nov 21
Radiation Belts                      Nov 23
SDSSP J083643+005453    ACIS-S
SDSSP J103027+052455    ACIS-S       Nov 24
NGC 3628 X-2            ACIS-S
SDSSP J130608+035626    ACIS-S
M87                     ACIS-S
CHVC125                 ACIS-S
V 410 TAU               ACIS-S
HS0218+3707             ACIS-S       Nov 25
PSS0134+3307            ACIS-S
PSS0121+0347            ACIS-S
HD100546                ACIS-I


All spacecraft subsystems continued to operate nominally.

Return to Status Reports