Colorful Planetaries X MORE THAN MEETS THE EYE M27 usually resembles its dumbbell nickname or an apple core in short exposures. However, deep images like the example at right, consisting of more than 12 hours of exposure data recorded through RGB and narrowband filters, reveal the nebula's outer " wings. " WIDE FIELD: MDW SK Y SURV E Y T DIFFERING PERSPECTIVES M76 offers an interesting view in both wide-field and high-resolution imaging rigs. Large fields imaged with long exposures reveal tenuous hydrogen nebulosity throughout the area, while in close-up compositions (inset), the planetary offers intricate, looping details. 20 FEBRUARY 2 021 * SK Y & TELESCOPE