NGC6820 nebula and NGC6823 open cluster in Vulpecola
Telescope: Canon EF 135mm f/2L USM telephoto lens (f/2.8 stopped)
Camera: Baader modified Canon 400D, 800 iso, RAW mode
- Mount: Astrotrac with polar scope
- Integration: 30 x 120 sec, (25 bias, 25 dark, 25 flat)
- Date, Location, Temp/Software: August 2019, Livorno (Italy), 26°C/MaxIm-DL, PixInsight, PhotoShop
- Click the image for 1920×1080 resolution
NGC 6820 is a small reflection nebula near the open cluster NGC 6823 in Vulpecula. The reflection nebula and cluster are embedded in a large faint emission nebula called Sh 2-86. The whole area of nebulosity is often referred to as NGC 6820. M27, the Dumbbell Nebula, is found three degrees to the east, and α Vulpeculae three degrees to the west. Open star cluster NGC 6823 is about 50 light years across and lies about 6000 light years away. The center of the cluster formed about two million years ago and is dominated in brightness by a host of bright young blue stars. Outer parts of the cluster contain even younger stars. It forms the core of the Vulpecula OB1 stellar association.