The Horsehead Nebula (Barnard 33) is around 1,500 light years from Earth and is located in the constellation of Orion. Due to its recognizable shape the Horsehead Nebula is one of the most famous celestial objects. It is categorized as a dark nebula composed mainly of hydrogen gas and high levels of dust blocking out background light. The dark Horsehead Nebula is visible due to the backdrop of the bright emission nebula IC 434. Both the Horsehead Nubula and IC 434 are part of the Orion Molecular Cloud Complex, an enormous star forming region spanning hundreds of light years in diameter. The Horsehead Nebula is around 3 to 4 light years tall and 2 to 3 light years across.
Horsehead Nebula (B33) with IC434, NGC2023, NGC2024 and IC435
Telescope: 16″ f3.75 Dream Scope
Camera: FLI ML16803
Mount: ASA DDM85
Exposure: 13 hours (66x300s Ha + 30x300s L + 3x20x300s RGB)
Date: November, December 2017 and February 2018
Location: Southern Alps, France
Detail of the Horsehead Nebula
Edit April 30th 2018: Happy to see that my picture of the Horsehead is now on the cover of the new release of “Tarangan: A Complete Guide To The Night Sky“, by Pradeep Nayak, English version.