http://gallery.cuttinedgeobservatory.com/v/nebulae/rosette/
The complex has the following NGC designations:
NGC 2237 - Part of the nebulous region (Usually used to denote whole nebula)
NGC 2238 - Part of the nebulous region
NGC 2239 - Part of the nebulous region (Discovered by John Herschel)
NGC 2244 - The open cluster within the nebula (Discovered by John Flamsteed in 1690)
NGC 2246 - Part of the nebulous region

The cluster and nebula lie at a distance of some 5,200 light years from Earth (although estimates of the distance vary considerably) and measure roughly 130 light years in diameter. The radiation from the young stars excite the atoms in the nebula, causing them to emit radiation themselves producing the emission nebula we see. The mass of the nebula is estimated to be around 10,000 solar masses.

It is believed that stellar winds from a group of O and B stars are exerting pressure on interstellar clouds to cause compression, followed by star formation in the nebula. This star formation is currently still ongoing.
A survey of the nebula with the Chandra X-ray Observatory in 2001 has revealed the presence of very hot, young stars at the core of the Rosette Nebula. These stars have heated the surrounding gas to a temperature in the order of 6 million kelvins causing them to emit copious amounts of X-rays.]]> en-us Gallery 2 RSS Module, version 1.1.8 Wed, 22 Apr 2026 16:07:29 +0000 120 http://gallery.cuttinedgeobservatory.com/d/1001-10/rosette.jpg http://gallery.cuttinedgeobservatory.com/v/nebulae/rosette/ http://gallery.cuttinedgeobservatory.com/v/nebulae/rosette/NGC-2244_CN.jpg.html http://gallery.cuttinedgeobservatory.com/v/nebulae/rosette/NGC-2244_CN.jpg.html ]]> Chris Johnson photo Mon, 01 Feb 2010 07:59:19 +0000 http://gallery.cuttinedgeobservatory.com/v/nebulae/rosette/NGC2244_Lum.jpg.html http://gallery.cuttinedgeobservatory.com/v/nebulae/rosette/NGC2244_Lum.jpg.html
Exposure
- L 15min subs @ bin1x1
- 2 hours total exposure

Equipment Used
- Starizona Hyperion 12.5"
- SBIG STL-11000M
- Paramount ME
- Astrodon Gen 2 Filters]]> Chris Johnson photo Thu, 19 Nov 2009 00:50:40 +0000 http://gallery.cuttinedgeobservatory.com/v/nebulae/rosette/NGC-2244_LRGB.jpg.html http://gallery.cuttinedgeobservatory.com/v/nebulae/rosette/NGC-2244_LRGB.jpg.html
Exposure
- LRGB 120:40:40:40
- L 15min subs @ bin1x1
- RGB 10min subs @ bin2x2
- 4 hours total exposure

Equipment Used
- Starizona Hyperion 12.5"
- SBIG STL-11000M w/ Adaptive Optics
- Paramount ME
- Astrodon Gen 2 Filters]]> Chris Johnson photo Fri, 20 Nov 2009 22:12:06 +0000 http://gallery.cuttinedgeobservatory.com/v/nebulae/rosette/NGC2244_crop.jpg.html http://gallery.cuttinedgeobservatory.com/v/nebulae/rosette/NGC2244_crop.jpg.html
Exposure
- HaL(HaR)GB 360:120:40:40:40
- Ha 30min subs @ bin 1x1
- L 15min subs @ bin1x1
- RGB 5min subs @ bin1x1
- 10 hours total exposure

Equipment Used
- Tele Vue NP-127is
- SBIG STL-11000M
- Paramount ME
- Astrodon Gen 2 Filters

Processing in CCDStack

Final processing Photoshop CS4]]> Chris Johnson photo Tue, 20 Jan 2009 12:06:09 +0000 http://gallery.cuttinedgeobservatory.com/v/nebulae/rosette/NGC2244.jpg.html http://gallery.cuttinedgeobservatory.com/v/nebulae/rosette/NGC2244.jpg.html
Exposure
- HaL(HaR)GB 360:120:40:40:40
- Ha 30min subs @ bin 1x1
- L 15min subs @ bin1x1
- RGB 5min subs @ bin1x1
- 10 hours total exposure

Equipment Used
- Tele Vue NP-127is
- SBIG STL-11000M
- Paramount ME
- Astrodon Gen 2 Filters

Processing in CCDStack

Final processing Photoshop CS4]]> Chris Johnson photo Tue, 20 Jan 2009 12:06:37 +0000 http://gallery.cuttinedgeobservatory.com/v/nebulae/rosette/rosette_ha_crop.jpg.html http://gallery.cuttinedgeobservatory.com/v/nebulae/rosette/rosette_ha_crop.jpg.html
Exposure
- Ha 30 min subs @ bin1x1
- 3 hours total exposure

Equipment Used
- Tele Vue NP-127is
- SBIG STL-11000M
- Paramount ME
- Astrodon Gen 2 Filters

Processing in CCDStack

Final processing Photoshop CS4]]> Chris Johnson photo Wed, 24 Dec 2008 00:41:27 +0000 http://gallery.cuttinedgeobservatory.com/v/nebulae/rosette/rosette_ha.jpg.html http://gallery.cuttinedgeobservatory.com/v/nebulae/rosette/rosette_ha.jpg.html
Exposure
- Ha 30 min subs @ bin1x1
- 3 hours total exposure

Equipment Used
- Tele Vue NP-127is
- SBIG STL-11000M
- Paramount ME
- Astrodon Gen 2 Filters

Processing in CCDStack

Final processing Photoshop CS4]]> Chris Johnson photo Wed, 24 Dec 2008 00:40:38 +0000