Happy Birthday AIM! One year ago, on April 25, 2007, the AIM spacecraft was successfully launched on a Pegasus launch vehicle. This past week we continued to work on the Relative Time-tagged Sequences to improve spacecraft autonomous operations. The spacecraft continues to operate nominally with daily periods of uplink receiver bitlock.
The SOFIE instrument continued nominal operation and 100% collection of science measurements. Data quality is excellent and unchanged. Successful adjustment of sun sensor integration time for center pixels was accomplished Saturday the 19th to improve the linearity of sun sensor measurements. These data are used for inferring stratospheric
transmission profiles, which are incorporated in the edge detection algorithm.
Processing of 2 days, April 11 and 12, was delayed due to an error in ephemeris data, which has been resolved. Processing of those days is expected early next week. All algorithm improvements are on schedule.
No problems are anticipated and nominal operations are expected to continue indefinitely.
CIPS continues to provide excellent science data from all four cameras. Further, our analysis of on-orbit calibration data shows that camera sensitivity has changed less than 0.5% since launch. CIPS data sequencing automatically switched from the Southern to Northern Hemisphere on the first day of spring, as planned
CDE is on and collecting dust impact data following the completion of the Recovery ATS. Temperatures and voltages are nominal. CDE Version 2 data processing is being implemented for Levels 1 (Charge) and 2 (Mass).