IC 4592, commonly known as the Blue Horsehead Nebula, is a reflection nebula located in the constellation Scorpius. The nebula's blue coloration is primarily due to the light from the nearby star Nu Scorpii reflecting off the dust particles within the nebula. This celestial feature is part of a larger complex of dark and reflection nebulae, making it a fascinating target for astrophotographers and astronomers alike.

The Blue Horsehead Nebula is situated approximately 400 light-years from Earth. Its intricate structures and the striking contrast between the blue reflection nebula and the surrounding dark nebulae create a visually stunning image. Observing and photographing IC 4592 requires dark skies and good equipment, but the result is a breathtaking view of this beautiful cosmic region.