This time-tagged stream of engineering telemetry is correlated with scheduled events as determined from the Mission Schedule. This allows the OMS system to fine tune its monitoring algorithms. Thus, the expected status of an instrument for a particular operating mode can be compared to the actual status. If there is a difference, the OMS system can report the discrepancy.
The Mission Schedule information also allows OMS to report in more detail what the status of the instrument and the telescope was during a specific exposure. Thus the most recent acquisition of guide stars, the orientation of the telescope, and minute changes in the V2/V3 axes during the exposure are reported.
OMS Software Development Status
OPUS (OMS) 12.1 Testing Status
HST/OSG Observation Logs document
OMS Regression Test Document(Under Construction)
OMS Process Reinitialization Matrix