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 yearsfrom Earth.

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.

Imaging telescopes or lenses: Takahashi Sky 90
Imaging cameras: Canon / CentralDS EOS 60D
Mounts: Sky-Watcher EQ-6 Skyscan
Focal reducers: Takahashi Sky 90 Flattener/Reducer 407mm
Software: PixInsight, BinaryRivers BackyardEOS
Dates: April 21, 2012
Frames: 12×480″ ISO1600 -15C
Integration: 1.6 hours
Darks: ~14
Flats: ~21
Bias: ~21

Author: Emanuele Todini
AstroPhotography of the day by SPONLI 20 Sep 2014