RGB colour composite image obtained by combining g′-, r′-, and i′-band images of 23′×23′ field of view from the Pan-Starrs1 public archive. Yellow squares and circles indicate the galaxies observed in our spectroscopic MOS observations and SDSS-DR16 spectroscopic redshifts, respectively. The blue contours show the isodensity galaxy distribution of likely cluster members (see Sect. 3.3). The white contours correspond to X-ray surface brightness after removing point sources using a pixel mask. In the upper right corner, the inset shows a magnified image of the cluster core. The labels BCG, 2 and 3 indicate the brightest cluster galaxy, and the second and third brightest galaxies, respectively. The green contours represent the diffuse radio emission observed with the VLA. North is up and east to the left.