ROSAT PSPC X-ray image (0.3–2.4 keV) superposed on radio contours of HB 3 at 92 cm (320 MHz) from the Westerbork Northern Sky Survey (Landecker et al. 1987). All images have J2000 coordinates. The X-ray image has the intensity range of (0.35–6.4) × 10⁻³ counts s⁻¹ arcmin⁻². The image shows a center-filled X-ray morphology with an inner ring structure. The radio contours are 0.8, 4.9, 8.9, 13, and 17 mJy beam⁻¹.