Jellyfish Nebula (IC443)10 Nov, 2015 in Gallery / Nebulae A supernova remnant, the Jellyfish has a neutron star at its core. The structure has two “shells” of dense gases. Scope: AT111EDT at f/5.6 Mount: AP Mach1 Camera: QSI583 Exposure: H-a/OIII/SII, 10.5 hrs total