Bubble Nebula (NGC 7635)
Twenty hours of exposure for one bubble of gas.
This photograph is also available in the shop as a full-resolution digital file.
Buy in the shopAbout the object
The Bubble (NGC 7635) in Cassiopeia lies roughly 7,000 light years away. It was inflated by the stellar wind of a single massive star pushing the surrounding gas outwards; the bubble is around 7 light years across.
How the image was made
- Captured
- 27 November 2025 (start, several nights)
- Total exposure
- 20 h 00 min (240 × 300 s)
- Camera
- ZWO ASI2400MC Pro
- Focal length
- 2 861 mm
- Mount
- Celestron (ovládač CGEM/CGX)
- Location
- Banská Bystrica, Slovakia (home observatory)
- Calibration & stacking
- Siril 1.4.0
- Processing
- Adobe Lightroom 9.0 (Windows)
Data from the original file’s metadata or from the author.