Monthly Newsletter

May 2002

City, Kansas and Cleveland, Ohio), the hardy travelers made it to their destination in 3 short days. It would be nice to add an amusing anecdote at this point, but it was a wonderfully uneventful road trip with everyone and everything arriving safely.
The XPS, TIM, and SOLSTICE instruments were carefully unloaded off the truck in their special vibration and shock resistant metal containers. The instrument module was moved into the clean room area at Orbital, carefully unpacked, units powered up, and the integration and testing phase began.
SIM remained at LASP for a few more weeks to refurbish some parts, and then to be calibrated and tested. As soon as SIM arrived at Orbital the first week in April, the instrument alignment process began. The alignment required that pointing of only one of the five instruments be slightly adjusted. Throughout early April, parts issues required that a number of electronic boxes be moved back and forth between Orbital and LASP for rework, but by the end of April everything was back at Orbital and ready for Spacecraft Test. The SORCE MU and Flight Software Team loaded a new flight code in mid-April, and the code verification test passed with flying colors. On April 16th, the SORCE instrument module was successfully mated to the spacecraft bus.

The Instrument Module is mated to the Spacecraft.

At this point, the initial alignments for the SORCE spacecraft and instruments are complete, and the MAESTRO to OASIS conversion continues smoothly. The instruments are currently undergoing Comprehensive Performance Testing (CPT), and will be for the next month.
On May 7th, the SORCE Fault Detection and Correction (FDC) Review team met. They reviewed the fault detection

and correction implemented for the SORCE observatory. The Pre-Environmental Readiness Review (PERR) is tentatively scheduled for May 30. This review will focus on making sure that the spacecraft is ready to survive the actual launch and post launch environment. Different tests include vibration, EMI/EMC measurement, mass properties, pyroshock separation system, thermal vacuum, and acoustics.
There will be five months of additional testing at Orbital before the payload and launch vehicle are moved to the Kennedy Space Center (KSC). Once at KSC, the two will be mated and further testing done. The launch is currently set for November 30.
Once the SORCE satellite is launched from the Pegasus, LASP is preparing to operate and obtain data from the SORCE instruments for a period of 5 years (6 year goal). Within 48 hours of data capture, all science data with the associated instrument and spacecraft engineering data will be processed and available to mission scientists. Within 3 months of data acquisition, the final release of all validated science data including corrections for changes in instrument performance will be provided to the scientific community.

SORCE Science Team News
Congratulations to Greg Kopp who was recently appointed as a SORCE Co-Investigator.
A SORCE Science Working Group Meeting was held at NIST in Gaithersburg, Maryland, February 26 to 28. The meeting's agenda concentrated on the calibration and characterization of the SORCE instruments. SORCE would like to recognize and thank everyone for all the assistance SORCE has received from NIST personnel (Gaithersburg and Boulder) and from Goddard personnel.

Upcoming Meetings
SORCE scientists plan to present papers or attend the following 2002 meetings:
NEWRAD, May 20-24, Gaithersburg, MD May 20-24, 2002
AGU Spring Meeting, May 28-31, Washington, DC May 28-31, 2002
AAS / SPD, June 2-6, Albuquerque, NM
NIST Workshop on Satellite Instrument Calibration, June 25-28, Gaithersburg, MD
SORCE Science Working Group, July 17-19, Steamboat Springs, CO
COSPAR, October 10-19, Houston, TX
Steamboat Springs, CO July 17-19, 2002

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