AAPOD2 Image Archives
The Helix in the Peacock — Planetary Nebula IC 5148
IC 5148, often called the “Helix in the Peacock,” is a bright planetary nebula about 3,000 light-years away in the constellation Grus. It represents the final, graceful stage of a Sun-like star’s evolution as it sheds its outer layers into space. The nebula spans nearly two light-years and expands rapidly through the surrounding interstellar medium, creating a spherical shell of glowing gas illuminated by its hot central white dwarf.
Special processing that reveals only the excess H-alpha emission highlights delicate inner structures nested within the dominant OIII glow. This technique unveils the complex interplay of ionized gases shaped by stellar winds and radiation. The result is a strikingly detailed portrait of a dying star enriching its cosmic neighborhood with the elements that will seed future generations of stars and planets.
IC 5148
IC 5148, known as the Spare Tire Nebula, is a planetary nebula about 3,000 light-years away in the constellation Grus. This stunning object represents the final stages of a Sun-like star, shedding its outer layers as it transitions into a white dwarf. One of the fastest-expanding planetary nebulae known, its gas shell moves outward at an impressive 50 kilometers per second. The nebula's delicate, circular structure, with hues dominated by ionized oxygen, glows as ultraviolet radiation from its central star energizes the ejected material.
Located at Namibia’s Gemsbock Observatory, within the Rooisand Desert Ranch, IC 5148 benefits from some of the clearest skies on Earth, free of light pollution and ideal for deep-sky observation. Its faint, ethereal beauty is best captured under these pristine conditions, revealing its layered complexity and relatively young age of just a few thousand years. Discovered in the late 19th century, this celestial jewel offers a glimpse into the future of our Sun and the cyclical nature of stellar life in the cosmos.