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On this page I collect my observations of the open star cluster NGC 6939 (Ghost Bush Cluster) in the constellation Cepheus.
The open star cluster NGC 6939 (Ghost Bush Cluster) in the constellation Cepheus is located close to the galaxy NGC 6946 (Fireworks Galaxy). With the Vespera, you can observe both jointly. Both were discovered by William Herschel in 1798.
| NGC 6939 | NGC 6946 | |
| Size: 7' (Stoyan) Distance: 6,100 light years (Stoyan) Rating: * (Stoyan) |
Size: 10' (Stoyan) Distance: 15 mio. light years (Stoyan) Rating: * (Stoyan) |
The open star cluster NGC 6939 (Ghost Bush Cluster; selected) in the constellation Cepheus (Image Courtesy of SkySafari Astronomy, www.simulationcurriculum.com)
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NGC 6939 (with NGC 6946), Aug 25, 2022 - original (90 frames = 900 seconds) |
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NGC 6939 & NGC 6946, Aug 31, 2025 - 2000p (90 frames = 15 min) |
NGC 6939 & NGC 6946, Aug 31, 2025 - 2000p (90 frames = 15 min), processed and denoised (PAI) |
