This is a bi-color image, but Ha[+NII] dominates the scene. The OIII is present nearly everywhere the Ha exists, but is dimmer. I've included both monochrome frames below, Ha then OIII.
Telescope: Astro-Tech AT111EDT and William Optics AFR-IV (eff. at f/5.6)
Camera and Exposure: SXVF-H9 (Ha+NII:23x1200"; OIII:17x1200"), Alnitak Flat-man flats
Filter: Astronomik Ha+NII & OIII
Guiding: SX Lodestar and SX OAG
Mount: Takahashi NJP
Software: Nebulosity, Maxim DL, Registar, Photoshop CS3
Location: The Woodlands, TX