Home > Stars & Star Clusters > NGC 2264 The Christmas Tree Cluster

NGC 2264 The Christmas Tree Cluster

NGC2264alt-800

NGC 2264 in the constellation Monoceros is sometimes called the Christmas Tree Cluster due to the vaguely triangular group of blue stars towards the top of this image with the large blue-white star S Monocertis, near the left centre of the photo, forming the base of the tree trunk. The cluster actually lies within a dense region of star-forming gas known as the Cone Nebula and you can just make out some of the pale white gas around the stars. Hydrogen alpha astronomy filters show up the surrounding gas much better in red, but here I wanted to focus on the star cluster itself.

The cluster was first discovered by William Herschel in 1784 and at magnitude 4.5 some of the stars are visible with the naked eye, but the cluster really pops out with 8x binoculars and even more with a 3″-4″ telescope.

Image taken 19/12/15 3.21am New Mexico time with iTelescope.net T3. 1 x 300 sec Colour. RA: 06h 40m 59.9s DEC: 09° 54′ 00″ (J2000). Processed with Maxim DL5 and Photoshop CS2.

 

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