NGC 3247 (Cl Westerlund 2, Gum 29, RCW 49, Whirling Dervish Nebula) in Carina

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  16" DCA: HaRGB 16" DCA: Annotation map 16" DCA: LRGB 16" DCA: Ha  
  Size: 2000 px Size: 2000 px Size: 2000 px Size: 2000 px  
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© Velimir Popov & Emil Ivanov 2013

This giant HII region and massive star formation region in the Carina arc is associated with the star cluster Westerlund 2. There are two Wolf Rayet stars (WR 20a and WR 20b) as well as at least a dozen O-stars within this massive cluster. The hottest known O-star is the O3V. A 2007 study gives a distance estimate of 26 000 ly +/- 4 500 ly.

Object details

Right Ascension 10:24:01 (h:m:s)
Declination -57:45:30 (deg:m:s)
Distance ~ 26 200 (ly)
Apparent Dimension - (arc min)

Image details


Center of field RA 10:24:06 (h:m:s)
Center of field DE -57:57:25 (deg:m:s)
Size 1.37 x 1.37 (deg)
Pixel scale: 1.23 (arcsec/pixel)
Orientation: Up is -178 degrees E of N
Charts and image details obtained from
Optic(s): 16" f3,75 Dream Corrected Astrograph (DCA)
Mount: Astelco NTM-500 direct drive mount
Camera: Apogee Alta U-16M CCD camera
Filters: Lum, Red, Green, Blue, Ha, OIII and SII Astrodon
Dates/Times: From 3 to17 of May 2013
Location: Namibia-TIVOLI ASTROFARM, S 23° 27' 40,9" / E 18° 01' 02,2"
Exp. Details: L:5x10min, R:4x10min, G:4x10min, B:4x10min, Ha:7x15min
  Bin 1, Total Exposure Time - 275 min (4:35 hours)
More details: Dark and flat frames reduction
Processing: PixInsight / PS
Copyright: Velimir Popov and Emil Ivanov 2013. All Rights Reserved
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