The Sadr region, IC 1318, is the busy neighborhood round the mag 2.2 star Sadr or gamma Cygni. It is a large expanse of nebulosity with dominant Ha emission nebulae and various dark nebulae. The Crescent Nebula (in the lower left cover of the image) is embedded into the region. This is one of my […]
The Sadr region, IC 1318, is the busy neighborhood round the mag 2.2 star Sadr or gamma Cygni. It is a large expanse of nebulosity with dominant Ha emission nebulae and various dark nebulae. The Crescent Nebula (in the lower left corner of the image) is embedded into the region. This is a simple Ha […]
The Crescent Nebula, NGC 6888, in a wide-field setting with lots of surrounding nebulosity. This is a pure narrow-band composite based on (18,16,15) frames for Ha, OIII, and SII with 1800sec each, taken at the Deep Sky West Observatory. The different versions below represent different color mappings, otherwise the processing is pretty basic. Exposure: HOS, […]