Motion of the sample star Gaia DR3 604895948360165888 across the detector during C05. Each point represents the central position in one image color coded with the time of observation. Panel (a) gives the original detector coordinates and panel (b) those after the rotation applied. The extent of 1″ on-sky is indicated. We note the difference in scaling between the x and y coordinate axes, and the change from (a) to (b).