STAR CLUSTERS OPEN Messier 25 Messier 21 Messier 18 Messier 11 Messier 40 Messier 24 Messier 73 Messier 52 Messier 45 Messier 44 Messier 93 Messier 50 Messier 36 Messier 41 Messier 35 Messier 47 Messier 46 Messier 103 Messier 7 Messier 6 M 93 – NGC 2247 M 73 – NGC 6994 M 67 – NGC 2682 M 52 – NGC 7654 M 44 – NGC 2632 + SATURN M 40 DOUBLE STAR M 39 – NGC 7092 M 37 – NGC 2099 M 35 – NGC 2168 M 29 – NGC 6913 M 7 – NGC 6745 M 6 – NGC 6405 NGC 4755 – CALDWELL 94