Multi-band (radio-optical) overlays of cluster A980. Panel a: Pan-STARRS i-band optical image superimposed with the low-resolution VLA L-band map (magenta contours at 3, 9, 81 × (σ = 25 μJy beam⁻¹)) and the 325 MHz medium-resolution GMRT map (blue contours at 3, 9, 27 × (σ = 100 μJy beam⁻¹)). The cluster galaxies (z = 0.1582 ± 0.0035; red circles) and foreground or background galaxies (z < 0.1547 or z > 0.1617; black squares) are shown within the field. The estimated redshift range (Δz = 0.0035) equivalent to the velocity dispersion (v_rms = 1033 km s⁻¹) of the cluster (Rines et al. 2013). Panel b: contours (red) of the GMRT 325 MHz map with uniform weighting, plotted at 5, 10, 20, … × (σ = 140 μJy beam⁻¹) and those with robust-2 setting (blue), plotted at 3, 6, 12, … × (σ = 100 μJy beam). Panel c: high-resolution VLA L-band contours are plotted at 3, 6, 12, … × (σ = 30 μJy beam⁻¹).