LOFAR 45.7″ × 44.7″ resolution image of ClG0217. The contaminating discrete sources are removed from the data. The LOFAR grey and Chandra cyan contours are drawn at ±[1, 2, 4, 8, 16] × 3σ, where σ_LOFAR = 335 μJy beam⁻¹ and σ_Chandra = 1.3 × 10⁻⁶ cts arcmin⁻² cm⁻². The LOFAR white contour is drawn at 2σ_LOFAR. The Chandra data are smoothed with a Gaussian beam of five-pixel sigma, where pixel size is 1.968″. The dashed red circle has a radius of R₂₀₀ = 2.3 Mpc. The arc lines show the locations of the northern and southern X-ray SB discontinuities.