Discover these Ghostly Deep Sky Objects

August 26, 2026

When the autumn chill sets in and the days grow shorter, Halloween decorations begin to appear in stores and neighborhoods, signaling the start of spooky season. It only seems natural for stargazers to begin turning their attention to the darker side of the cosmos. While the universe may not be haunted, it is home to a surprising collection of celestial objects with eerie appearances and chilling nicknames. From ghostly nebulae and phantom galaxies to the infamous Demon Star, these deep-sky spectral sights offer a fun way to embrace the Halloween spirit while exploring the wonders of the night sky. Let’s look at some of the most chilling, spine-tingling objects that fall has to offer.

Algol (β Persei): Located in the constellation Perseus, Algol is known as the "Demon Star," a reference to Medusa’s snake-covered head in Greek mythology. Algol is one of the sky's most famous variable stars. Its apparent brightness fluctuates between magnitude +2.1 and +3.4 every 2.87 days as the stars in its eclipsing binary system orbit one another and periodically block each other's light from our vantage point on Earth. Ancient cultures associated Algol with bad luck and evil omens, while modern astronomers later discovered that its changing brightness is caused by an eclipsing binary system.

Boogeyman Nebula (LDN 1622): Located in the constellation Orion approximately 1,400 light-years from Earth, LDN 1622 is a dark nebula composed of dense clouds of gas and dust that obscure the light from stars and glowing nebulae behind it. It was cataloged by astronomer Beverly T. Lynds as part of her Lynds Dark Nebula Catalog, where it received the designation LDN 1622. The nebula's shadowy appearance resembles a sinister figure emerging from the darkness, earning it the nickname “Boogeyman Nebula.” Because it is seen mainly as a dark silhouette against a faint background of glowing hydrogen, it is an extremely challenging visual target and is best appreciated through long-exposure astroimages.

Flying Bat Nebula (Sh2-129): Discovered by astronomer Stewart Sharpless in the late 1950s and cataloged as Sharpless 2-129, the Flying Bat Nebula is a large but faint emission nebula located in the northern constellation Cepheus, approximately 1,300 to 2,300 light-years from Earth. No Halloween observation list would be complete without a bat! Stretching its glowing wings across space, this vast cloud of ionized hydrogen gas shines under the intense radiation of nearby hot stars, creating a delicate reddish glow and one of the sky's most fitting seasonal sights. While Sh2-129 can be recorded through long exposures, its faint structure makes it a challenging visual target for most observers. In deep images, its wispy tendrils resemble a celestial bat soaring through the Milky Way.

As if a cosmic bat weren't spooky enough, hidden within the nebula is the elusive Squid Nebula (Ou4). Invisible through amateur telescopes and extraordinarily difficult to capture, this faint deep-sky wonder was discovered by French amateur astronomer Nicolas Outters in 2011. Requiring many hours of narrowband imaging to reveal, the Squid Nebula gradually emerges as a pair of enormous bluish lobes resembling ghostly tentacles. Nestled within the Flying Bat Nebula, it appears as though a mysterious squid-like creature has taken up residence inside the bat's cosmic cave.

Ghost of Cassiopeia (IC 63): Drifting through the rich Milky Way star fields of Cassiopeia, IC 63 is a faint emission and reflection nebula located approximately 550 light-years from Earth. Illuminated and sculpted by the nearby variable star Gamma Cassiopeiae, the nebula glows with red hydrogen emission while surrounding dust reflects the star's blue light, creating its eerie, ghost-like appearance. Discovered by German astronomer Max Wolf in 1893, IC 63 rides high in the autumn sky and is a challenging visual target, but a favorite among astroimagers. Its wispy tendrils and spectral silhouette appear to drift through the darkness of space, earning it a place among the season's most haunting celestial sights.

Owl Cluster (NGC 457): Located in the constellation Cassiopeia, NGC 457 is an open star cluster whose brightest stars form the unmistakable appearance of a wide-eyed owl gazing back from the depths of space. Others see the beloved extraterrestrial character E.T., complete with an elongated body and outstretched arms. Discovered by William Herschel in 1780, NGC 457 lies approximately 7,900 light-years from Earth. It shines at an integrated magnitude of about +6.4, making it an easy and rewarding target for observers using binoculars or a small telescope. Its most prominent “eyes” are created by two bright foreground stars, while dozens of fainter cluster members trace the owl’s spread wings or, to some imaginations, an E.T.-like figure. With its striking shape and whimsical resemblance to a nocturnal creature, the Owl Cluster is a fitting addition to any Halloween observing list alongside ghosts, bats, and cosmic sorcerers.

Skull Nebula (NGC 246): Lurking in the constellation Cetus, the Sea Monster, NGC 246 is a planetary nebula discovered by William Herschel in 1785. This haunting remnant marks the final stage in the life of a Sun-like star, whose outer layers were cast into space, forming an expanding shell of glowing gas surrounding a hot white dwarf. Long-exposure images reveal dark cavities silhouetted against a ghostly blue-green glow from ionized oxygen, creating the eerie skull-like appearance that gives the nebula its nickname. Located approximately 1,600 light-years from Earth and shining at an apparent magnitude of about +8.0, NGC 246 is visible through moderate-sized telescopes under dark skies. While its diffuse glow is visible, its unmistakable skull-shaped features are best revealed through astroimaging, where this celestial specter emerges from the darkness.

Western Veil Nebula (NGC 6960): Also known as the Witch's Broom Nebula, NGC 6960 is a haunting section of the Veil Nebula located in the constellation Cygnus, the Swan. Discovered by William Herschel in 1784, it lies approximately 2,400 light-years from Earth. It forms the western edge of the expanding remains of a massive star that exploded in a supernova around 10,000 years ago. The Witch's Broom is renowned for its ghostly, broom-like filaments of glowing gas, making it an especially fitting target for Halloween observing. Under dark skies, a telescope equipped with an O III filter reveals an intricate network of delicate strands that appear almost three-dimensional. Observers can trace the nebula's tangled, rope-like streamers as they weave through the rich star fields of Cygnus. Long-exposure astroimages showcase spectacular colors throughout the nebula, with blue-green regions produced by doubly ionized oxygen (O III) and reddish filaments glowing from hydrogen energized by the expanding shock wave of the ancient stellar explosion. The bright foreground star 52 Cygni serves as a convenient guidepost for locating this eerie cosmic broomstick.

Witch Head Nebula (IC 2118): Drifting through the constellation Eridanus, IC 2118 is one of the sky's most haunting sights. Located approximately 900 light-years from Earth, this faint reflection nebula is illuminated by the brilliant blue-white star Rigel in neighboring Orion. First observed by William Herschel in 1786 and later photographed by Max Wolf in 1891, IC 2118 is an exceptionally challenging visual target, with its faint glow detectable only in large telescopes under pristine observing conditions. Its true character emerges through long-exposure astroimages, which reveal clouds of blue interstellar dust shaped into the unmistakable profile of a witch's face gazing toward Rigel. Subtle traces of hydrogen add hints of red to the nebula's ghostly features, enhancing its eerie appearance and making the Witch Head Nebula one of the most iconic and recognizable Halloween-themed objects in the night sky.

Wizard Nebula (Sh2-142): Located in the constellation Cepheus, the Wizard Nebula (Sh2-142) is a vast star-forming region of glowing hydrogen gas surrounding a young open star cluster NGC 7380. Discovered by Caroline Herschel in 1787, the cluster lies approximately 7,000 to 8,000 light-years from Earth and forms the heart of this mystical nebula. Shaped by a combination of luminous gas and dark dust lanes, the nebula's structure appears to depict a celestial sorcerer raising an arm as if casting a spell across the cosmos. NGC 7380 shines at an apparent magnitude of about +7.2, making the cluster visible through telescopes under dark skies. At the same time, the surrounding nebula is considerably fainter and best revealed through long-exposure astroimages. Although the wizard's silhouette is invisible through most telescopes, images unveil a pointed hat, flowing robes, a raised arm, and wispy tendrils of gas that have inspired its nickname.

The night sky has inspired myths, legends, and ghost stories for thousands of years. Whether you're watching the eerie dimming of Algol, spotting a cosmic owl among the stars, or imaging the phantom glow of the Ghost of Cassiopeia, these celestial wonders remind us that the universe can be as mysterious as it is beautiful. While some of these spooky objects can be glimpsed through a telescope under favorable conditions, many are too faint to reveal their true forms visually and emerge only through the power of long-exposure astroimaging. This fall, when darkness falls and the stars begin to shine, step outside and see how many of these haunting celestial sights you may encounter. And remember, for every ghostly nebula, cosmic creature, or celestial sorcerer you find, countless more wonders remain hidden in the depths of space, waiting to be uncovered through patience, imagination, and persistent exploration. Clear skies, and happy hunting!