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NGC 2359 (Thor's Helmet)
NGC 2359 (also catalogued as Sh2-298 and called Thor's Helmet) is an emission nebula in the constellation Canis Major. It is approximately 15,000 light-years away from Earth and its size is approximately 30 light years. The central star is an extremely hot Wolf-Rayet star, a giant thought to be in a pre-supernova stage of its evolution. The Thor's Helmet is similar in nature to the Bubble Nebula, but interactions with a nearby large molecular cloud probably have contributed to its more complex shape and structure.
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Object Details: |
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| Object: | NGC 2359 (Sh2-298) |
| Constellation: | Canis Major |
| Center of field: | R.A. 07h 18m 30s ; DE. -13° 13′48″ |
| Field dimensions: | Ca 15 x 20 ' |
Technical Details: |
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| Optics: | 12" ASA Astrograph at F/3.6 |
| Mount: | ASA DDM 85 |
| Camera: | SBIG STL-11000M |
| Filters: | Astronomik LRGB filters |
| Dates/Times: | 31 October 2011 |
| Location: | Rozhen |
| Exposure Details: | L = 60 min, R = 40 min., G = 40 min.,B = 40 min.; |
| Subexposures: | 10 minutes |
| Acquisition: | CCD Soft |
| Processing: | PixInsight, Photoshop CS |
