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NGC6888-et Bulle de savon-13-08-2024-Hamois-Luc-Viatour
2024-08-13
- Classification
- Photograph
- Museum
- Wikimedia Commons
- Rights
- CC BY-SA 2.5, as the museum states it.
- Who can see it
- Teens profiles and older: its museum says too little about what it shows to place it for younger viewers. How works are placed
About this work
NGC 6888, the Crescent Nebula, is an emission nebula located in the constellation of Cygnus. Discovered in 1792 by the German-British astronomer William Herschel, it is approximately 5,650 light-years away from us. This spectacular nebula is the result of extremely fast stellar winds from the star HD 192163 (WR 136), a massive Wolf-Rayet star. This star is destined for an explosive end as a supernova within the next 100,000 years.
At the bottom of the image, we can distinguish the Bubble Nebula, a much fainter object. It is a planetary nebula, meaning the remains of a medium-mass star at the end of its life, similar to our Sun. Discovered in 2008 by American amateur astronomer Dave Jurasevich, it is located about 4,000 light-years away, in the foreground of the Gamma Cygni nebulosities (the red regions). These latter are located at a slightly greater distance, about 5,000 light-years.
Photos taken with a Skywatcher Esprit 120ED refractor at 860mm focal length on an AZ-EQ6 mount with a Nikon Z7 modified camera and IDAS NBZII filter. Exposure time of 5 hours in 50 x 6 minutes, with 50 darks, 50 flats, and 50 bias frames. Setup managed with an Asiair Plus. Taken in Hamois, Belgium…
