Best Wide Field
Sh2-276, also known as Barnard’s Loop, is a vast emission nebula situated within the Orion constellation. Observed by E.E. Barnard in 1894, it represents a prominent arc of glowing gas linked to the larger Orion-Eridanus superbubble. The nebula's structure—particularly the Barnards loop—is notable f...
Simeis 147 is a vast filamentary nebula located in the Taurus region of the Milky Way. It represents the expanding remains of a supernova explosion that occurred approximately 9,000 years ago. The remnant’s immense size – spanning roughly three degrees – makes it particularly notable for astronomers...
Sh2-129, also known as the Flying Bat Nebula, is a significant emission nebula located within the Cepheus OB2 association. This region exhibits a distinctive bipolar outflow, designated Ou4, driven by intense star formation. It’s notable for its complex structure and is primarily observed using wide...
The Flying Bat Nebula, also known as SH2-129, is a diffuse emission nebula located in the Cepheus constellation. It’s recognized for its faint glow and association with the nearby Sharpless Object Ou4, commonly called the Squid Nebula. This region represents an active star formation zone rich in ion...
IC 2177 is a diffuse emission nebula located along the Monoceros-Canis Major border. Discovered in 1898 by Isaac Roberts, it encompasses regions like Sh2-292 and Sh2-296, often referred to as the “Seagull Nebula”. This object is notable for its complex structure and vibrant colors produced by ionize...
Sh2-264 represents the Lambda Orionis Ring, a prominent emission nebula within the Orion constellation. This vast structure is driven by ionization from the blue giant star Meissa, creating vibrant colors. Astronomers study it to understand regions of active star formation and the interaction betwee...
The Lobster Claw Nebula, formally Sh2-157, is an emission nebula located within the Cassiopeia constellation. It’s notable for its distinctive claw-like structure formed by intense star formation activity. This region, associated with the Cas OB2 association of massive stars and situated in the Pers...
Sharpless 2-220, commonly known as the California Nebula, is a massive emission nebula located in the constellation Perseus. It was discovered by astronomer Edward Emerson Barnard in 1884 and formally cataloged as NGC 1499. The nebula derives its popular name from its distinctive shape, which closel...
Sh2-171, also catalogued as NGC 7822, is a vast emission nebula and star-forming complex located in the constellation Cepheus. The region was systematically catalogued by astronomer Stewart Sharpless in his 1959 survey of H II regions. It is distinguished by its intricate structures of glowing gas a...
The Nancy Grace Roman Space Telescope is a NASA infrared observatory currently under development and scheduled for launch in the late 2020s. Named after NASA's first Chief of Astronomy, the telescope will operate from a halo orbit at the Sun-Earth Lagrange point 2. Its primary mission involves study...
Sh2-119, also known as the Clamshell Nebula, is an H II region in the constellation Cygnus. It surrounds the O-type star 68 Cygni and forms a ring-shaped Strömgren sphere, created by the star's intense ultraviolet radiation ionizing the surrounding hydrogen gas. The nebula is listed in the Sharpless...
Sh2-54 is an extensive H II emission nebula located in the constellation Serpens, surrounding the open star cluster NGC 6604. It is part of a broader, complex star-forming region that also includes the well-known Eagle and Omega Nebulae. The nebula is a target for astrophotographers and astronomers,...
The Lambda Orionis Nebula, catalogued as Sh2-264, is a large H II region in the constellation Orion and part of the Lambda Orionis star-forming complex. It surrounds the hot star Lambda Orionis, traditionally named Meissa, whose ultraviolet radiation ionizes the region's hydrogen gas. Its broad, rou...
Sh2-115 is an emission nebula and H II region in the constellation Cygnus, catalogued in Stewart Sharpless's survey of ionized hydrogen regions. It lies in a rich Milky Way star field northwest of Deneb and is associated with active star formation; radiation from hot young stars, including members o...
Sh2-126 is a large, faint emission-nebula complex in the constellation Lacerta and is catalogued in Stewart Sharpless's second catalogue of H II regions. Its hydrogen gas is ionized chiefly by ultraviolet radiation from 10 Lacertae, an O-type star associated with the Lacerta OB1 stellar group. Becau...
The Meissa Ring is the roughly 12-degree nebular ring around Lambda Orionis, likely shaped by hot stars and past feedback in Orion.
