This page will contain a list of changes in the status of RHESSI which are of interest to the scientific user community. These will be listed in reverse chronological order. Events which happen routinely will NOT be listed here, such as:
Transitions from sunlight to shadow and back
Passages through the South Atlantic Anomaly (SAA)
Automated insertion and removal of the x-ray attenuators in front of the detectors
Automated changes in decimation (the elimination of every Nth photon below a certain energy in order to save memory/downlink capacity)
Commanded or intrinsic changes in any other parameter (detector thresholds, gain, resolution, etc.) as a result of day/night or SAA events
Contacts with ground stations
Major changes in behavior of all the RHESSI subsystems will be reported as well, as will occasional announcements of improvements, additions, and changes in the ground-segment services (data distribution, etc.). RHESSI users should consult this page before beginning analysis of any new data set. THIS PAGE WILL NOT COVER IMPROVEMENTS OR CHANGES IN THE RHESSI DATA ANALYSIS SOFTWARE; for that, please see the RHESSI Data Center.