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. Known as a Wolf-Rayet star, the central star is 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. Source Wikipedia.
The image was captured with the Meade 12"LX200, using the Atik 383L+ mono at F6.11. I used Astronomik's 12nm Halpha, OIII and SII narrow band filters only. All subs were taken at 1x1 bin, -10C, and 10 minutes each.
Halpha: 25 subs (4.17 hr) on Feb 16th.
OIII: 25 subs (4.17 hr) on Mar 1st.
SII: 23 subs (3.83 hr) on Mar 3rd.
Processing was done with PixInsight. This image was processed following (for the most part) kayronjm's tutorial of Feb. 24th.
See
http://lightvortexastronomy.blogspot.com/2013/02/tutorial-nebulae-pixinsight-workflow.htmlColor mix is per Juan's preference. This is a slight crop, and North is up.
Comments