Two OSIRIS/GTC pointings towards Cl0024 with the ELGs catalogued by GLACE. Red circles show the 158 galaxies with MOS observations, the green squares show the 15 galaxies that were not observed with MOS, and the orange star shows the position of the source identified as an M-type star. The violet cross shows the centre of the cluster based on the brightest cluster galaxy (BCG) and the black circle denotes the R₂₀₀ of 1.7 Mpc (Treu et al. 2003). We also show the typical size of the MOS slits in the lower-right corner of the mosaic, as well as the north-east directions below the legend.