NGC2359 - Thor's Helmut



Scope: C8 at f/4.8,  Location: Blair Valley, Anza Borrego Desert, CA   4 March 2006,   Camera: Artemis285

Exposure: 7 x 480 sec H-Alpha (1x1),  6 x 240 sec IR/UV Block Filter (1x1), 8 x 120 sec RGB Exposures (2x2).

Processing: Images were captured  with Artemis Capture (as FITs).  Aligned/stacked in Registax 3 and saved as FITS. Luminance,  H-Alpha, IR/UV Block,  and Color channels were scaled and  color balanced in Astroart. Channels were co-registered in Astroart.   Curves and Levels applied in Photoshop to optimize object features. Final LRGB combine was done in Photoshop using Luminance Layering (or LLRGB).   SGBNR was used to smooth background noise on the final result.  Selective layer sharpening was performed on prominent nebula features. Final Image size is approximately 1392x1040.

All exposures in this image were guided; North is up in this image. NGC 2359 is also known as "Thor's Helemt" due to its distinctive shape. The "helmet" shape is a gas bubble formed by a very energetic Wolf-Rayet star in the center of this bubble. The bubble is formed from the expelled outer layers of this star that are ejected at high velocity. This region of our Milky Way galaxy  is about 10,000 light years distant  from Earth. This image replaces an earlier image that can be seen in the Archives here.  The Horizontal FOV is 32'.

Image center is located approximately - Equatorial 2000: RA: 07h 18m 30s Dec: -1313'30"



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