I have shot several times this supernova remnant in Gemini. In this image, there are three different exposure sets combined, first from the year 2010 and two others from this season. Total exposure time is now around 20h. Latest images for this target are shot at 11.02 this week, 3h of H-alpha emission.


IC 443 (also known as the Jellyfish Nebula and Sharpless 248 (Sh2-248)) is a Galactic supernova remnant (SNR) in the constellation Gemini. It locates visually near the star Eta Geminorum at distance of about 5000 light years.

IC 443 may be the remains of a supernova that 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 cases of supernova remnants interacting with surrounding molecular clouds