Deep Sky Object in Winter
NGC2264 & Cone Nebula (Open Cluster in Monoceros)
|Date & Time: ||Dec 14 2007, from 22:29 to 24:51 JST(+0900)
|Composed 6shots with 10 minutes exposed|
|Optical: ||TAKAHASHI 12.5cm(4.9") fluorite refractor with a conversion lens (f=700mm, F5.6)
|with IDAS LPS-P2-FF Light-pollution suppression filter|
|Auto-guided with VIXEN ATLUX Equatorial
|Digital Camera: ||Nikon D80 (Remodeled)
|Location: ||Ooizumi, Hokuto city, Yamanashi pref.
|Camera Settings: ||Recording format...12bit CCD-RAW, converted to 16bit TIFF(3872×2592)|
This picture shows you a very distributed open cluster and surrounding nebulosities about 6 degrees north of the Rosette Nebula in Monoceros.
A bright bluish star in upper part is a variable of S Mon, changing from 4.2 to 4.6 in magnitude.
The cluster of NGC2264 is formed from fine stars lying south of S Mon.
You can see a bluish reflection nebula just southwest of the variable, and a very very dimmed reddish diffused nebula in the southward.
The diffused nebula has a dark cut in southern region; this characteristic structure has given the nebula a nickname of "The Cone Nebula" or "The Christmas Tree", etc.
Furthermore, a very gigantic star field including this picture is occupied by pale and reddish nebulosities.
The hydrogen gaseous region has a number of NGC2264, same as the open cluster in this image.
|NGC2264 / Diffused Nebula & Open Cluster, type 1 E|
|R.A.||06h 41m 6.0s (2000.0)|
|Dec.||+09° 53' 00" (2000.0)|
|Real Size||45 light yrs.|
|Distance||2600 light yrs.|
|Other IDs||Sh2-273, LBN911|
→Jump to Close-up of NGC2264 (94KB)