Similar to NGC_507
NGC 7318
NGC 7318NGC 7319
NGC 7319NGC 7320
NGC 7320
NGC 7331
NGC 7331NGC 7424
NGC 7424NGC 7479
NGC 7479NGC 7522
NGC 7522
NGC 7635
Bubble Nebula
M52 (天体)
Messier 52
NGC 7662
NGC 7662NGC 7742
NGC 7742NGC 7752
NGC 7790
NGC 7790
NGC 7793
NGC 7793NGC 7814
NGC 7814NGC 5315
NGC 52
NGC 52NGC 53
NGC 53NGC 54
NGC 54NGC 1360
NGC 1360
NGC 2169
NGC 2169NGC 4666
NGC 4666