Non-thermal 1.4 GHz synchrotron emission maps (in erg s⁻¹ cm⁻² sr⁻¹, Hz⁻¹) for the SNR generated by a M_⋆ = 20 M_⊙ progenitor moving at v_⋆ = 20 km s⁻¹ , respectively. The remnants are shown are times 8 kyr (left panels) and 80 kyr (right panels) after the explosion, with a viewing angle of the observer that is inclined by θ = 0° (top panels) and θ = 45° (bottom panels) with respect to the plane of the object. The ring-like structures result in the mapping of 2.5D simulations being mapped into a 3D shape.