Christ­mas Tree Cluster (NGC 2264) in Monoceros

Christ­mas Tree Cluster (NGC 2264) is an extremly bright and extremly obvi­ous open cluster in Mono­cer­os in the cen­ter of the field. In long exposed images, the cluster ist sur­roun­ded by a sym­phony of nebu­los­ity whose bright and dark folds seems to ripple across space like vis­ible sound waves. Below the cluster, one can find the fam­ous Cone Neb­ula, while to the upper right, Fox Fur Neb­ula (Sh2-273) can be spotted.

Below of the cen­ter to the right, Hubble’s Vari­able Neb­ula (NGC 2261) can be found, also known as Cald­well 46. Wil­li­am Her­schel dis­covered this fan-shaped glow 1783. The neb­u­lous object includes R Mono­cerot­is, a 10th mag star at the south­ern tip of the fan. His­tor­ic­ally the star has var­ied between mag­nitude 9.5 and 13.0.

Long exposed Ha data has been com­bined with col­or data to cre­ate this image.

[descrip­tion from O’Meara]

Details

Tele­scope:
Mount:
Cam­era:
Fil­ters:
Expos­ure:
Loc­a­tion:
Author:
Taka­hashi FSQ-106EDX III
ASA DDM85
QHY600M-PH
Astro­don Gen2
HaR­GB 320:140:130:160 min.
ROSA Remote Obser­vat­or­ies South­ern Alps
© Mar­tin Ruster­holz, Astrophotographer

Find­er Chart Christ­mas Tree Cluster (NGC 2264)

Christmas Tree Cluster Sky Chart - Astrophotography Martin Rusterholz

Image cre­ated by Skychart