Thor’s Helmet LRGB – NGC 2359


Common Name: Thor’s Helmet
Formal Name: NGC 2359
Date: 1/6/2014
Constellation: Canis Major
Location: Casa Grande
Hardware: Celestron Edge 11 on Paramount, SBig 8300F Camera/Filter Wheel/St-i guider
Temperature: -20C
Bin Mode: 2×2
Images: (15) x 10 minute Blue exposures
(15) x 10 minute Green
(15) x 10 minute Red
(24) x 15 minute Luminous
Total Time = 13.5 hours
Sky Flat fields 
Processing: Reduced in Maxim, Aligned/Stacked/Processed in PixInsight
Notes: NGC 2359 (also known as Thor’s Helmet) is an emission nebula in the constellation Canis Major. The nebula is approximately 15,000 light-years away and 30 light-years in size. The central star is the Wolf-Rayet star HD 56925, an extremely hot giant thought to be in a brief, pre-supernova stage of evolution. It is similar in nature to the Bubble Nebula, 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. (Wikipedia)

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