Pixinsight, Photoshop

Finally the weather gave me three consecutive clear nights and I took the opportunity to photograph my favorite target, the Horsehead Nebula, or B33. B33 is a dark nebula in the constellation Orion, about 1,500 light-years away from us and located just below Alnitak, the easternmost star in Orion's belt. It is part of a swirl of gas and dust, shaped like a horse's head, hence the name. It is one of the most recognizable and well-known nebulae in the sky, even if it is difficult to observe it visually, in fact its characteristic shape can only be identified through long photographic exposures. It is sometimes confused with IC 434, which is actually the red emission nebula behind it, mainly originating from ionized hydrogen from the nearby bright Sigma Orionis.