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Contains:  IC 2581, NGC 3247
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NGC 3247 (Whirling Dervish Nebula) [NB], 


            Dean Carr
NGC 3247 (Whirling Dervish Nebula) [NB]

NGC 3247 (Whirling Dervish Nebula) [NB]

Technical card

Resolution: 3953x2971

Dates:March 28, 2017Feb. 4, 2019

Astronomik Deep-Sky Blue Filter: 60x10" -20C bin 1x1
Astronomik Deep-Sky Green Filter: 60x10" -20C
Astronomik Deep-Sky Red Filter: 60x10" -20C bin 1x1
Astronomik Ha 6nm 1.25": 8x900" -20C bin 1x1
Astronomik OIII 6nm 1.25": 7x900" -20C bin 1x1
Astronomik SII 6nm 1.25": 9x900" -20C bin 1x1

Integration: 6.5 hours

Avg. Moon age: 14.81 days

Avg. Moon phase: 0.16% job: 2556149

RA center: 156.157 degrees

DEC center: -57.759 degrees

Pixel scale: 1.014 arcsec/pixel

Orientation: 0.967 degrees

Field radius: 0.697 degrees

Data source: Traveller


NGC 3247 (also known as Gum 29, RCW 49 or the Whirling Dervish Nebula) is a very large and not often imaged HII nebula that can be seen in the constellation of Carina.

NGC 3247 is variously listed as being between 14,000-25,000 light years from Earth. The nebula is home to over 2,000 stars and contains more than 300 protostars. Of note, Gum29 includes the Westerlund 2 star cluster, which includes some of the hottest, brightest and most massive stars known.

This image was processed in PixInsight using Ha, OIII and SII filters. The unusual HOS palette was used to provide more color variation between the various elements of Westerlund 2. Short-exposure RGB image data was also blended with stars in the NB image. The final image was re-sampled by 120% for aesthetic reasons.



Dean Carr
License: None (All rights reserved)

Sky plot

Sky plot


NGC 3247 (Whirling Dervish Nebula) [NB], 


            Dean Carr