Click here to see a higher resolution image of the Rosette Nebula (1.1 Mb)

Click here to see a cropped image detailing the core of the Rosette Nebula (617 Kb)

 

 

The Details
Object
NGC 2244 Rosette Nebula in Monoceros
Optics
Astro Physics 160 EDF refractor at f/5.7
Platform
Astro-Physics 1200 GTO
Camera
SBIG STL-11000M
Filters
Tru-Balance 5nm H-alpha, 3nm OIII, 3nm SII filters Gen 2
Date
28 & 31 December 2011, 01 January 2012
Location
Mount Wilson Observatory - Mount Wilson, California USA
Exposure
Ha 8h15m, SII 6h00m, OIII 6h30m (Total exposure time 20h45m)
Software
Maxim DL/CCD, CCDStack 2, Photoshop CS5
Orientation
Field of View: 02°10’50" x 01°27’02" centered on RA 06h31m59s
DEC +04°56’12” (2000.0) . North angle 90.3°; east 90° CCW from north
Notes
The nebula itself has a number of NGC designations identifying its various bright areas, they being NGC 2237, 2238, 2239 and 2246. The open cluster in the center of the Rosette Nebula is NGC 2244, it a relatively young 4 million years in age with its stars formed from the surrounding gas. The diameter of the nebula is about 130 light years across. It is situated about 4500 light years from earth and contains up to 11,000 solar masses of material, making it one of the largest such nebulae in the Milky Way galaxy.

This "false color" image was created using a tricolor technique by assigning SII to the red channel, H-alpha to the Green channel, and OIII to the blue channel. A top luminance layer taken from the Ha data was used to complete the image.

 

 

 

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No reproduction of these images are permitted without prior approval of the author.