This image was taken using my 4 inch f/6.3 refractor, a Vixen Atlux mount, PHD auto-guiding, a set of Astronomiik narrowband filters, S11, O111 and H Alpha, with an Atik 383L mono CCD camera. I captured five minute sub frames with matching dark frames and combined them with bias and flat field frames to reduce the effect of vignetting in the final image. The H Alpha luminance data was taken on two separate evenings, combined with some old narrowband colour data. The total exposure time was 60 minutes using O111 and S11 filters and 120 minutes using a H Alpha filter.
RGB image
Hubble Palette
Hubble Palette + RGB
