description Barnard 150 Overview
Barnard 150, commonly referred to as the Seahorse Nebula, is a dark nebula located in the constellation Cepheus. It appears as a prominent, roughly one-degree-long filament of dense cosmic dust and molecular gas that obscures the light from background stars. The nebula is part of a larger complex of dark clouds and contains dense, star-forming cores where new stellar objects can emerge. Its distinct shape gives it its popular aquatic nickname among astronomers and astrophotographers.
insights Ranking position
Barnard 150 ranks #179 of 564 in the Nebula ranking, behind Blinking Planetary, ahead of Seagull Nebula.
help Barnard 150 FAQ
Why does Barnard 150 appear black in photographs?
Barnard 150 is a dense cloud of dust that absorbs visible light from the Milky Way stars behind it. Unlike an emission nebula, it is seen mainly as a dark silhouette against a bright stellar field.
Where is the Seahorse Nebula in the sky?
Barnard 150 lies in the northern constellation Cepheus at a distance of roughly 1,200 light-years. Its winding shape covers about one degree of sky, approximately twice the apparent width of the full Moon.
Is star formation happening inside Barnard 150?
Yes, the cloud contains dense cores designated L1082 A, B, and C. Infrared and radio observations reveal low-mass star formation that visible-light images cannot show through the dust.
What equipment is needed to photograph Barnard 150?
Its one-degree length favors a telescope and camera combination with a relatively wide field of view. Long, carefully calibrated exposures under dark skies help separate the Seahorse's dust from the crowded Cepheus star field.
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