NCG 6888
Widefield of the Crescent Nebula
A cosmic bubble
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NGC 6888, also known as the Crescent Nebula, is a cosmic bubble about 25 light-years across, blown by winds from its central, bright, massive star. Near the center of this intriguing widefield view of interstellar gas clouds and rich star fields of the constellation Cygnus, NGC 6888 is about 5,000 light-years away. The three color composite image was created by stacking exposures through narrow band filters that transmit the light from atoms in the clouds. Hydrogen is shown as green, sulfur as red, and oxygen as blue. NGC 6888’s central star is classified as a Wolf-Rayet star (WR 136) and is shedding its outer envelope in a strong stellar wind, ejecting the equivalent of our Sun’s mass every 10,000 years. Burning fuel at a prodigious rate and near the end of its stellar life, this star should ultimately go out with a bang in a spectacular supernova explosion.
The Crescent Nebela in Cygnus
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Technische Karte
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| Objekt | NGC 6888 |
| Imaging telescopes | Takahashi FSQ-106EDX4 |
| Aufnahmekamera | QHY600M SBFL |
| Focal Reducer | 645RD QE0.72x Reducer |
| Montierung | 10Micron GM1000 |
| Nachführung | – |
| Filter | Baader 3.5 / 4nm Ultra-Narrowband-Filter-Set 50,4mm (H-alpha / O-III / S-II), Baader R, G, B (50,4mm) |
| Zubehör | PrimaLuceLab Esatto 4″, Pegasus Astro Falcon Rotator v2, CTU XT Tilter |
| Aufnahmedauer | 36.5 hours (H-alpha: 265×180″, O-III: 235×180″, S-II: 170×180″, RGB each: 60×60″) |
| Aufnahmedatum | Between July 2025 and August 2025 |
| AstroBin | Link |
NGC 6888 PRINT & RAW DATA
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Download of the fully calibrated data set now available!
