IC 443 - The Jellyfish Nebula
Exposure Time: 12 x 15 Mins. w/ LPR Filter
Total Exposure Time: Total Exposure Time: 3 hours
Seeing: Seeing: 7
Transparency: Transparency: 8
The images were stacked using Deep Sky Stacker and Processed using CCDStack, Photoshop cs2 and Noiseware Professional
IC 443 (also known as the Jellyfish Nebula and Sharpless 248 (Sh2-248)) is a Galactic supernova remnant (SNR) in the constellation Gemini. On the plan of the sky, it is located near the star Eta Geminorum. Its distance is roughly 5,000 light years (~5×1016 km) from Earth.
IC 443 is thought to be the remains of a supernova occurred 3,000 - 30,000 years ago. The same supernova event likely created the neutron star CXOU J061705.3+222127, the collapsed remnant of the stellar core.
IC 443 is one of the best-studied case of supernova remnant interacting with surrounding molecular clouds.
IC 443 is an extended source, having an angular diameter of 50 arcmin (by comparison, the full moon is 30 arcmin across). At the estimated distance of 5,000 ly (1,500 parsec) from Earth, it corresponds to a physical size of roughly 70 light years (20 parsec).
Manchester, Michigan - 3/17/2010
Imaged By: Jeff Thrush