Fig. 21.

A schematic representation of the MISE activities that will occur during each Europa flyby. An encounter (E_n) is defined as starting 2 days before closest approach (C/A) h (i.e., at about the five-day (5d) marker, where days are counted from apoapsis). In addition to the observation acquisition strategy explained in 4.1 (and during the green curve) and data validation/downlink plan explained in 4.2 (see receipt of one processed cube on right and green triangle near apoapsis), key events include (1) around the start of the E_n, the spacecraft team will generate the last orbital determination (OD) predicts and MISE then generate and uplink their scan mirror profiles and command sequence for E_n. The MISE cooldown will also start, bringing the instrument to its operational temperatures for data acquisition. The spacecraft’s Bulk Data Storage BDS filters (red boxes) are part of the spacecraft sorting of data for downlink; as MISE collects its data on-instrument for processing before sending to the spacecraft (explained in Sect. 5.1), a BDS filter will run about two days after C/A so that all MISE data from E_n can be processed and readied for downlink