Introduction | Map | Sketch | My Own Observations | References
On this page I collect my observations of the galactic emission nebula NGC 2237 (2237-9/46) called Rosette Nebula and the open star cluster NGC 2244 in the constellation Monoceros/Unicorn.
The open star cluster NGC 2244 is embedded in the Rosette Nebula NGC 2237-9 / 46. While the star cluster is bright and is said to be recognizable even with the naked eye, the nebula can only be seen if the sky is dark and, possibly, using a nebula filter.
At the beginning of March 2017, I also looked out for the Rosette Nebula NGC 2237-39/46 (galactic emission nebula) in the constellation Monoceros/Unicorn using the Heritage P130 on my GoTo mount, but was not able to find the nebula, only the open cluster NGC 2244 inside the nebula, which was also not very impressive. Perhaps the narrow crescent of the moon already played a role in this... I assume that I saw the open star cluster (rather "nebulous") already when I "roamed" the respective area with binoculars (which is difficult to verify...). According to Karkoschka, this should be possible...
Size: 80 'x 60' / 23' (Stoyan)
Distance: 4,700 light years (Stoyan)
Ranking: */*** (Stoyan)
Galactic emission nebula 2237-39/46 (Rosette Nebula) and cluster NGC 2244 inside the nebula; on top of it NGC 2264, the Christmas Tree cluster
The sketch by Michael Vlasov (DeepSkyWatch.com) provides a rough impression of what I observed (my impression was much fainter than the sketch): Sketch of the Rosette Nebula by Michael Vlasov (Copyright © Michael Vlasov 2016)
Note: I have only the author's permission to link to this sketch.