Day 26 image before and after kernel‐convolved image subtraction with ISIS. The object in the center of the unsubtracted ﹩35^{\prime \prime }\times 35^{\prime \prime }﹩ field is the host galaxy of GRB 031203, which is extended in the east‐west direction. When a reference frame is subtracted from the image, the residual light from the SN is clearly evident. The reference frame was formed from the five I‐band images taken more than 50 days after the GRB, when the SN had faded.