IC443, commonly known as the Jellyfish Nebula, is a Supernova remnant, from Crayford skies is really only visible if imaging using narrowband filters.
Imaging:
Ha filters work the best but it will also show up in SII filters, it is invisible in an OIII filter.
Images by Neil Webster

Image by Neil Webster No details provided
Images by Leigh Slomer

Image by Leigh Slomer – no details provided

Image by Leigh Slomer – no details provided