Deep Sky - Maurice Toet
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NGC 6543, Cat's Eye Nebula

NGC 6543, Cat's Eye Nebula

Exposure time (halo): 3 hours, 40 minutes, Ha:OIII:OIII = 100:60:60 minutes (20 min. 7 nm H-alpha & 8 nm Oxygen-III subs) | Exposure time (core): 14 minutes, Ha:OIII:OIII = 7:7:7 minutes (1 min. 7 nm H-alpha & 8 nm Oxygen-III subs) | Optics: Vixen VMC260 f/11.5 | Camera: SBIG ST-8300 | Mount: Astro-Physics Mach1 GTO | Location: Zoetermeer, Netherlands | Date: June 9, 2011.