Figure 5: The figure shows the optical afterglow of GRB 090424 as detected with the 1.23 m CAHA telescope. The image has been created by combining -band images taken with the 2 k 2 k CCD camera currently in use. The upper right box shows a magnified picture of the afterglow region. The magnitude of the afterglow was . The mean observing epoch of the image is April 24.87 UT. North is up and East is right. The field of view of the images is .