The Orion Nebula (also known as Messier 42, M42, Great Nebula in Orion or the Great Orion Nebula), it is a diffuse nebula situated south of Orion's Belt in the constellation of Orion. It is one of the brightest nebulae in the night sky and is visible to the naked eye in the night sky as a faint glow in the region around the middle of the 3 stars which make up Orion’s sword. M42 is located at approximately 1300 light years from Earth.
This image, taken over 3 nights, shows M42 along with 2 other nebulae, De Mairan’s nebula (M43) and The Running Man nebula (Sh2-279). De Mairan’s nebula is located just off to the centre left of the image, separated from M42 by dark dust lanes. The Running Man nebula can be seen towards the top of the image as an area of blue nebulosity (a reflection nebula), with the ‘Running Man’ as a silhouette in the middle.
Although the Orion nebula it is a relatively bright, photographing it without blowing out the core (at centre of the image) is difficult. If you look closely at the core you will see a small grouping of 4 stars, this is known as The Trapezium. The red/pink colouration of the nebula is due to the ionisation of hydrogen gas.