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Contains:  NGC 2359
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NGC2359 (Thor's Helmet), 





    
        

            Dean Carr
NGC2359 (Thor's Helmet)

NGC2359 (Thor's Helmet)

Technical card

Resolution: 2880x1920

Dates:Dec. 14, 2017

Frames:
Astronomik Ha 6nm 1.25": 8x900" -20C bin 1x1
Astronomik OIII 6nm 1.25": 6x1200" -20C bin 1x1

Integration: 4.0 hours

Avg. Moon age: 26.12 days

Avg. Moon phase: 12.57%

Astrometry.net job: 2253547

RA center: 109.664 degrees

DEC center: -13.204 degrees

Pixel scale: 1.015 arcsec/pixel

Orientation: 90.191 degrees

Field radius: 0.488 degrees

Locations: Wiruna, Ilford, New South Wales, Australia

Data source: Traveller

Description

NGC2359, commonly known as the Thor’s Helmet Nebula because of its appearance, is an emission nebula surrounding a Wolf-Rayet star (WR7) approximately 12,000 light-years from Earth in the constellation of Canis Major.

Wolf-Rayet stars such as WR7 are hot, massive and luminous stars that have burnt off most of their hydrogen fuel and are undergoing nuclear fusion of elements such as helium in their cores to generate energy. This picture is likely a ‘before’ image of WR7 prior to it eventually exploding as a supernova.

The picture was formed by combining individual images taken with two different filters that allow imaging of ionised Hydrogen (Ha) and Oxygen (OIII). It was processed in PixInsight using a two-colour palette (Red = Ha, Green = Ha/OIII blend and Blue = OIII). It has been cropped and resampled by 120% for aesthetic reasons.

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Author

dean.carr
Dean Carr
License: None (All rights reserved)
1971
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Revisions

  • NGC2359 (Thor's Helmet), 





    
        

            Dean Carr
    Original
  • Final
    NGC2359 (Thor's Helmet), 





    
        

            Dean Carr
    B

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NGC2359 (Thor's Helmet), 





    
        

            Dean Carr