NGC2422 Planetary Nebula

11. NGC2392 Planetary Nebula In a 2-inch telescope this planetary appears quite starlike, but in a 4-inch its bright blue disk becomes apparent. In their booklet The Finest Deep-Sky Objects, J. Mullaney and W. McCall note that it is easily seen in a 6-inch telescope, but a 10-inch or larger at 100 power is necessary for a truly fine view.