Thors Helmet Nebula (NGC 2359)

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About this Image

NGC 2359 (also known as Thor's Helmet) is an emission nebula in the constellation Canis Major. The nebula is approximately 12000 light-years away and 30 light-years in size. The central star is the Wolf-Rayet star WR7, an extremely hot giant thought to be in a brief pre-supernova stage of evolution. It is similar in nature to the Bubble Nebula, but interactions with a nearby large molecular cloud are thought to have contributed to the more complex shape and curved bow-shock structure of Thor's Helmet.

Technical Details


Chart32 Keller Cassegrain 800mm, FL 5600mm

Mount Chart32 direct drive fork mount unguided
Camera Nikon D810A with remote timer
Date Jan 2015
Location CTIO Chile
Sky Conditions mag 21.5 sky, temperature 10-15 C
Exposure 22x5min at ISO800 combined
Programs used ImagesPlus
Photoshop CS5