Alessandro Carrozzi
The Clampshell Nebula
The Clampshell Nebula (Sh2-119) is a large emission nebula located about 2,200 light-years from Earth, in the constellation Cygnus. It lies just 3° east of the famous North America–Pelican complex and, perhaps because of this proximity to such a well-known object, it is not among the most frequently photographed regions of the sky. In reality, it is a highly fascinating area, made particularly striking by the contrast created by a dense network of dark dust in its southern portion. Near the center of the field shines, like a pearl, the star 68 Cygni: its closeness is only apparent, as it is actually more than twice as far away as the nebula.
Technical data: Nikon 400 mm f/2.8 on ZWO AM5N mount. ZWO ASI 2600MC DUO camera. 84×300 s (7 h) at f/4 with Optolong L-Extreme filter (Dual Band Ha/OIII 7 nm).
The Clampshell Nebula
The Clampshell Nebula (Sh2-119) is a large emission nebula located about 2,200 light-years from Earth, in the constellation Cygnus. It lies just 3° east of the famous North America–Pelican complex and, perhaps because of this proximity to such a well-known object, it is not among the most frequently photographed regions of the sky. In reality, it is a highly fascinating area, made particularly striking by the contrast created by a dense network of dark dust in its southern portion. Near the center of the field shines, like a pearl, the star 68 Cygni: its closeness is only apparent, as it is actually more than twice as far away as the nebula.
Technical data: Nikon 400 mm f/2.8 on ZWO AM5N mount. ZWO ASI 2600MC DUO camera. 84×300 s (7 h) at f/4 with Optolong L-Extreme filter (Dual Band Ha/OIII 7 nm).