The Helix Nebula in SII, Ha, and OIII
This is a mapped color image using the Hubble Palette of the Helix Nebula. Image is 150 minutes each channel (binned 2X2) with 30 minute sub exposures taken at -15C. Dark Subtracted only. Equipment used was an SBIG ST11K w/Astrodon Ha, OIII, and SII fi