Chandra/HETGS image of GX 13+1 obtained from the reprocessed level-2 event file. The image is a detail close to the X-ray position. The grey scale represents the number of photons for each pixel integrated along the whole duration of the observation. Close to the zero-order position, the number of events is almost zero because of the strong pile-up. The yellow circle centred at RA =  and Dec indicates the updated position of GX 13+1 (see text), and the red and white circles indicate the error boxes of the infrared and radio counterparts of GX 13+1. The magenta and the red crosses indicate the previous X-ray position of GX 13+1 in the SIMBAD and NED catalogue, respectively.