H (left) and K_s (right) image fragments zoomed in on the X-ray pulsar position whose 1σ error is shown by the circle. The images are smoothed with a Gaussian 3 × 3 pixel kernel, and their horizontal sizes are ~45. As in Fig. 1, the contours are from the V band image, they show the structure of the PWN in the optical. Several relatively bright knots nearly the pulsar position are marked by H1–H4 and K1–K5.