Optical/Near-Infrared images of the clusters. Top: pseudo-color image of the clusters XMMU J0302.2-0001 (left, red channel: H band, green: z, blue: R) XMMU J1532.2-0836 (right, red channel: z, green: z + R, blue: R). Adaptively smoothed X-ray contours are overlaid in cyan. Solid/dashed circles mark a 60″/30″ radius region centered on the X-ray detection. An associated overdensity of red galaxies is apparent in both cases. Bottom: a high contrast zoom on the central regions of the clusters (dashed circle has a 30″ radius). XMMU J0302.2-0001 is displayed in the H band whereas XMMU J1532.2-0836 in the z band. Red circles mark the confirmed spectroscopic members with properties listed in Table 3 and spectra displayed in Fig. 3. The BCG is marked with a dashed red circle (ID 1 for both clusters). Spectroscopically confirmed foreground galaxies are indicated by green crosses.