NGC2264, Cone Nebula

2019-02-27 / Click on image to enlarge

"The Ghost of Christmas."

NGC 2264 region is also referred to as the Christmas Tree Cluster, the Cone Nebula and the Fox Fur Nebula. The objects are located in the constellation of Monoceros not far off the left arm of Orion and are about 800 parsecs or 2600 light-years away from Earth. The Monoceros is a faint constellation and is visible by the naked eye only during good seeing conditions due to its lack of colossal stars.

The Christmas Tree Cluster was named for its triangular shape, formed by a cluster of very young stars, that looks like a tree in visible light. It is located in the northern part of NGC 2264, just above the Cone Nebula. The bright variable star S Monocerotis (15 Monocerotis) is located slightly to the north and marks the trunk of the Christmas tree. The apex of the tree is located at the Cone Nebula.

The Christmas Tree star formation consists of young stars obscured by heavy layers of dust clouds. These dust clouds, along with hydrogen and helium are producing luminous new stars. The combination of dense clouds and an array of colors creates a color map filled with varying wavelengths. As seen in the photograph, we are able to differentiate between young, red stars and older blue stars.

The texture and colour of the Fox Fur Nebula resemble the head of a red fox stole. The nebula contains enormous quantities of interstellar dust and gas, which are illuminated by the massive young stars that are being formed within the nebula’s thick clouds. The nebula’s red glow is a result of hydrogen gas being stimulated to emit its own light by the strong ultraviolet radiation from the massive, young, hot blue stars in the cluster. The nebula’s blue areas are composed mainly of clouds of dust that reflect the blue light of the young stars.

Technical Details

LocationZollikerberg, Switzerland
CameraNikon DSLR D810A
TelescopeTS ONTC 12" f/4 Carbon Newton
OpticsTS 2,5" Wynne Coma Corrector
Focal Length1126mm
MountiOptron CEM60 Center-Balanced Equatorial Mount
AutoguidingLacerta MGEN2 (Autoguiding, Dithering)
Planetarium SoftwareStellarium
Image Session ControlAPT - Astro Photography Tool v3.5, ASCOM Platform 6
Lights91 x 120s (total 3h02'), ISO-1600, additional Biases, Flats, no Darks
Stacking SoftwarePixinsight 1.8, Drizzle 2x
Image ProcessingPixinsight 1.8