NGC 6823 and NGC 6820 in Vulpecula
NGC 6823 is an open cluster in Vulpecula, surrounded by emission nebula NGC 6820 (Sh2-86) with a real diameter of about 50 light years and 6000 light years away.
The most striking feature is the trunk-like pillar of dust and gas protruding from the east side of the nebula towards the open cluster. The center of the open cluster is about two million years old and is predominantly represented by many young, bright blue stars.
Long exposed Ha-data was used to bring out the details in the surrounding of the open cluster.
[description from wikipedia]
Details
Telescope:
RCOS 14.5″ f/8
Mount:
ASA DDM85
Camera:
Apogee U16M
Filters:
Astrodon Gen2
Exposure:
HaLRGB 680:400:220:220:220 min.
Location:
ROSA Remote Observatories Southern Alps
Author:
© Martin Rusterholz, Astrophotographer

Hello, my name is Martin Rusterholz. I’m a Swiss amateur astrophotographer living near Zurich, the biggest town in Switzerland. My interest in astronomy started when I was 16. At that time, I built my first Newtonian telescope and mount. I studied physics at the Swiss Federal Institute of Technology (ETH) which was the only study including at least some aspects of astronomy and astrophysics.
“Looking at the nights sky is an experience touching everybody deeply inside, something common to all human beings independent to the language spoken by the individuals”.
Deep-sky astrophotography is my passion.