Of the many deep-sky sights in the constellation Cygnus along the rich band of the northern Milky Way, the Crescent Nebula (NGC 6888) isn’t the biggest or brightest, but it still finds its place on the target list of many astrophotographers and visual observers. This shimmering and intricate arc of glowing gas presents a rare example of a massive star in its end stages as it ejects mass at a furious rate on its way to a violent demise as a supernova.
Deep Sky Observing
Articles about how to understand, find, and see celestial objects including stars, galaxies, nebulae, and star clusters with binoculars, telescopes, and the naked eye.
Cepheus, the King, is an ancient and rather dim constellation, but its position along the northern Milky Way means it harbors more than its share of deep-sky sights including star clusters, nebulae, even the lovely Fireworks galaxy (NGC 6946). But the best field of view in the constellation encompasses three deep-sky sights including a star-forming nebula, star cluster, and an aging red supergiant that’s one of the reddest and most luminous stars in the sky [Read more…] about The Elephant Trunk NebulaShare This:
The Flaming Star Nebula (IC405) ranks as one of the showpiece sights in the northern constellation Auriga. This glowing emission nebula gains its energy from the star AE Aurigae, a 6th-magnitude massive blue-white star about 1,500 light years away. This brilliant star, which outshines our Sun by some 30,000 times, blasts out ultraviolet light that ionizes the cloud of hydrogen gas around the star. As the hydrogen atoms reassemble, they emit light at signature wavelengths of red and green light that make these nebulae so beautiful. Most such nebulae are energized by stars that formed within their densest and most opaque regions. But that’s not the case with the Flaming Star Nebula. AE Aurigae did not originate here; it’s just passing by chance through a cold cloud of hydrogen as it hurtles through the Milky Way, far removed from the place it was born [Read more…] about Runaway StarsShare This:
Conjured by Johann Hevelius in the late renaissance, the dim, linear constellation Lynx fills in the space between the much larger constellations Gemini, Auriga, and Ursa Major, just out of the plane of the northern Milky Way. While it doesn’t much resemble its namesake and contains no bright stars, Lynx harbors one of our galaxy’s most distant outliers, the famous ‘Intergalactic Wanderer’ (NGC 2419), a globular cluster that roams the desolate expanse between the Milky Way and the Andromeda Galaxy [Read more…] about The ‘Intergalactic Wanderer’Share This:
In the early months of each year, stargazers south of the equator enjoy a dazzling view of a rich part of the Milky Way, one that’s festooned with open star clusters, emission nebulae, and bright blue-white stars. Here, in the constellations Centaurus and Crux, we gaze into one of the two major spiral arms of the Milky Way, the Scutum Centaurus Arm, that originates from the long bar of ancient stars at the core of our galaxy.
An observer looking overhead in the northern hemisphere sees a completely different perspective. Here the view lies in a direction away from the center of the galaxy into the outer reaches of the Perseus Arm, the second major spiral arm that emanates from the galactic core [Read more…] about Sightseeing along the Perseus Arm of the Milky WayShare This: