NGC2244, The Rosette Nebula in Monoceros

 

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Description: The central cluster of young stars initially formed out of the nebula's material and the brightest of them cause the emission of the nebula.  While the nebula is 5,500 light years distant, it is estimated to be 130 light years in diameter and covers an area greater than 1 in diameter.
 
Exposure Data: 3/17,18/2002.  RRGB: 20x2m, 10x2m, 10x2m, 10x4m. RGB binned 2x2. -10C, 3.5 arc-sec./pixel.
 
Processing: Acquired via script with Maxim, reduced, aligned, combined in Mira, color combine, Maxim, RRGB combine in Photoshop.
 
Optical System: FSQ-106 @ F/5, ST-8E NABG/CFW-8A CCD camera, AP900GTO mount.
 
Comments: Acquisition script used FocusMax to refocus between filter selections and image sequences. Compare to same object taken with TV-140 at 2.65 arc-sec./pixel.