2MASS colour magnitude (J − K_S)/K_S plot for stars within 7′ of the centre of the new cluster Alicante 7. The diamonds identify stars with colours and Q in the same range as RSGs in RSGC3. Five of them, marked by crosses, are spectroscopically confirmed as M-type supergiants. Triangles are other stars in the area with very similar colours, but fainter magnitudes. Note that the brightest star, A6 in Table 4, is saturated in K_S.