Changing ramp shapes with sub-pixel offsets in band 1A (left). Each linestyle corresponds to a different pixel on the detector (ranging from PSF peak to wings), with the x, y pixel coordinates given in the legend. Each colour corresponds to a different pointing, with the offsets in α with respect to the central pointing given in the legend. Only three samples of the nine-point raster are shown for clarity. The panel on the right shows which these are in the JWST V2/V3 coordinates.