Sky distribution of galaxy groups around cluster A1795. X and Y are sky coordinates in a Hammer-Aitoff projection (Martínez & Saar 2002). Black filled circles denote clusters with N_gal ≥ 30, black empty circles those with 10 ≥ N_gal< 30, grey crosses those with 4 ≥ N_gal< 10, and grey dots show poor groups with only two or three member galaxies. Upper panel: groups and clusters in a distance interval of 90−130 h^-1 Mpc, lower panel: in a distance interval of 50−90 h^-1 Mpc. The void in the upper panel is due to the boundary effects.