IC 443 The Jellyfish Nebula

This image was taken using an 80mm refractor on a Vixen Atlux mount. PHD guiding was used with an Atik 383L CCD camera and a set of Astronomik narrowband filters.

The total exposure times were one hour for each narrowband filter, SII, OIII, and H-alpha.

I capture 10 min sub-frames with matching dark-frames and used flat-fields to reduce the effects of vignetting in the final image.

Hubble palette

Closer view

RGB

Closer view