Helix Nebula NGC 7293 in the constellation Aquarius
At a distance of around 650 light years, the Helix Nebula is one of the closest planetary nebula to the sun. The blueish central star ejected a part of its gases into space around 10,000 years ago and causes these gases to glow with its intense UV light. Inside the nebula, the blue-green glow of excited oxygen dominates, while the outer part of the nebula glows in a bright red due to ionized hydrogen.
| Date: | 01.10.2019 |
| Optics: | Astro Physics EDF |
| Aperture: | 130 mm |
| Focal Length: | 870 mm |
| Camera: | ZWO ASI 071 MC |
| Exposure: | 24 x 600 s |
| Location: | Chamaeleon Observatory, Onjala Lodge, Namibia |
| Processing: | Nebulosity, Regim, Photoshop |
| Diameter: | 3.5 light years |
| Distance: | 650 light years |
