Sequence of AIA 193 Å full-disk images showing the AR complex and the development of the coronal dimming into a small CH in the southern hemisphere. The ellipse in the top left frame marks the extent of the AR prior to the eruption. In the top right frame, the well-visible CH is marked by an arrow. The first frame in the top left corner is taken on February 3 at 22:29 UT, and the last frame in the bottom right corner is taken on February 7 at 04:59 UT.