IC 443 (Jellyfish Nebula)

IC 443 (Jellyfish Nebula or Sharpless 248) is a supernova remnant in the constellation Gemini. Its distance from Earth is about 5,000 light years. IC 443, which is probably remnant of a supernova that exploded 3,000 - 30,000 years ago, is one of the best-studied cases of supernova remnants interacting with surrounding molecular clouds.



Technical Details:

Optics: 12" ASA Astrograph at F/6.8 and F/3.6
Mount: ASA DDM 85
Camera: SBIG STL-11000M
Filters: Baader 8nm narrowband filters
Dates/Times (F/6.8): January 2011
Dates/Times (F/3.6): November 2010
Location (F/6.8): Home Observatory Varna
Location (F/3.6): National Observatory Rozhen
Exposure Details (F/6.8): SII = 480 min., Ha = 480 min., OIII = 480 min.
Exposure Details (F/3.6): R = 50 min., G = 50 min., B = 50 min.
Subexposures (F/6.8): 30 minutes
Subexposures (F/3.6): 10 minutes
Acquisition: CCD Soft
Processing: PixInsight, Photoshop CS

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