Typical time sequence of EUI/FSI synoptic imaging in between the filter wheel motions (orange boxes). Exposure times of the dummy image (0.2 s), the short-exposure image (0.2 s), and the regular image (10 s) are indicated in blue. Reading out a full sensor FSI frame (3072 × 3072 pixels) takes about 2.6 s seconds for any of the 3 exposures. The duration of the filter motions depends on the start and ending position (typically 3.7–6.2 s). During FSI synoptic imaging, this sequence is repeated for each of the two bandpasses with different filter positions, after which the filter wheel moves to a light-blocking position until, depending on the imaging cadence, a new cycle is started.