March 7, 2008
All subsystems are nominal. There were two DSN passes this week. This week, missing data was successfully retransmitted, continuing a complete record of small forces data essential for the Navigation team's analysis. The flight software memory space was defragmented, ensuring that low processor loading continues. Background sequence SN010 was loaded. The next scheduled pass is Monday, March 31, 2008. Meanwhile, the team continues work on updating fault protection parameters suitable for the upcoming geometry. The angle between the Sun, spacecraft, and Earth is approaching 20 degrees.
February 8, 2008
All subsystems are nominal. There were two DSN passes this week. Stardust will now have monthly contact periods commanded by 8-week sequences. The next scheduled pass is Thursday, March 6, 2008. Accordingly, status reports will now be written less frequently, after each contact period. Commanding this week included updating fault protection parameters to be compatible with less frequent contact periods, and reducing the volume of telemetry that will be recorded while out of contact. Background sequence SN009 is on board.
January 31, 2008
All subsystems were nominal during the most recent DSN pass on January 30, 2008. Yesterday's pass concludes a very busy week for Stardust. On Thursday, January 24th, the recorded data on board was downlinked by reducing the amount of real-time data being produced. Downlinking all required recorded data is necessary prior to imaging, which requires that the spacecraft memory be defragmented prior to processing images. On Friday, January 25th, we commanded calibration NAVCAM images. The images of the calibration lamp show the expected saturation. All sequence commanding and image processing was successful. On Monday, January 28th, the solar array strings were commanded from series, producing approximately 8 amps, to parallel, producing 14 amps. The switch is required as the distance from Stardust to the Sun increases. Currently, Stardust is 1.51 AU from the Sun, and increasing. On Wednesday, January 30th, the CIDA instrument was turned back on following the power configuration change.
The Spacecraft team is in the process of testing Safemode parameters. Changes to Safemode's timing required to accommodate very infrequent (monthly) DSN contacts. The updated parameters will be sent to the spacecraft on Wednesday, February 6th. Background sequence SN009 has been developed and will be also be sent on Wednesday. Sequence SN009 is the first 8-week sequence. Sequence SN008 is the current sequence.
January 17, 2008
All subsystems were nominal during the most recent DSN pass on January 10, 2008.
Background sequence SN008 is on board. The next scheduled DSN pass is Thursday, January 24. While there were no DSN passes this week, the team was busy developing products for Nav Camera calibration, Power configuration, and Safemode parameter updates.
January 10, 2008
All subsystems are nominal. There were two DSN passes this week, the first since entering conjunction on December 19, 2007. The spacecraft's Earth pointing attitude flipped as the spacecraft passed behind the Sun. The next sheduled pass is January 24. Background sequence SN007 concluded today. SN008 is on board.