Sh2-27 – Emission Nebula in the constellation Ophiuchus (Serpent-Bearer)
The star ζ Oph in the constellation Serpent-Bearer is a young, massive and very hot star, which excites the surrounding hydrogen gas to glow up to a distance of 50 light-years. The resulting nebula is very large with a diameter of about 10° in the sky, equivalent to 20 full moon diameters. However, it is very faint and can only be imaged with long exposure times.
| Date: | 06.08.2021 |
| Optics: | Sigma 85mm f/1.4 DG HSM Art at f/4 |
| Focal Length: | 85 mm |
| Camera: | Canon EOS 700Dac |
| Exposure: | 26 x 600 s |
| Location: | Chamaeleon Observatory, Onjala Lodge, Namibia |
| Processing: | Nebulosity, Registar, Photoshop |
| Diameter: | 100 light years |
| Distance: | 460 light years |
