Cone Nebula NGC 2264 in the Unicorn - The Cone Nebula NGC 2264 in Monoceros...

Cone Nebula NGC 2264 in the Unicorn - The Cone Nebula NGC 2264 in Monoceros - The Cone Nebula is a region H II located about 2600 years from Earth. It is accompanied by a cluster of stars called the Christmas tree. The bright star at the top is S Monocerotis, a star of magnitude 4.7. Image obtained by the 2.2m telescope of La Silla. NGC 2264 and the Christmas Tree cluster lies about 2600 light - years from Earth in the constellation of Monoceros, the Unicorn, not far from the more familiar figure of Orion, the Hunter. The image shows a region of space about 30 light - years across. The cluster is very bright and can easily be seen with binoculars. With a small telescope (whose lenses will turn the view upside down) the stars resemble the glittering lights on a Christmas tree. The dazzling star at the top is S Monocerotis, bright enough to be seen with the unaided eye. It is a massive multiple star system that only emerged from the dust and gas a few million years ago. At the bottom of the frame, the dark triangular feature is the evocative Cone Nebula, a region of molecular gas flooded by the harsh light of the brightest cluster members. The region to the right of the brightest star has a curious, fur - like texture that has led to the name Fox Fur Nebula. Much of the image appears red because the huge gas clouds are glowing under the intense ultra - violet light coming from the energetic hot young stars. The stars themselves appear blue as they are hotter, younger and more massive than our own Sun. Some of this blue light is scattered by dust, as can be seen occurring in the upper part of the image. This picture of NGC 2264 was created from images taken with the Wide Field Imager (WFI), a specialised astronomical camera attached to the 2.2 - metre Max - Planck Society/ESO telescope at the La Silla observatory in Chile