Digital Photography - Deep Sky - Maurice Toet
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NGC 7023, Iris Nebula

NGC 7023, Iris Nebula

Exposure time: 6 hours, 45 minutes, L:R:G:B = 240:55:55:55 minutes (15 min. L and 5 min. RGB subs) | Optics: Takahashi FSQ-106ED f/3.6 | Camera: SBIG ST-8300 | Mount: Astro-Physics Mach1 GTO | SQM: 21.4 magnitude/arcsec² | Location: Étoile-Saint-Cyrice, Hautes-Alpes, France | Date: Augustus 30, 2011.

NGC 7023IrisNebulaST8300Takahashi