IC 443 "Medusa"
Photo description / processing
Another "Cosmic Brain"
The Medusa Nebula, also known as IC 443.
It is located about 5,000 light-years away from us and has a diameter of roughly 70 light-years. The nebula formed after a supernova explosion—though exactly when that explosion occurred is not precisely known. Different sources give different estimates, ranging from three to thirty thousand years ago.
I shot over two nights. The first night I captured 20 frames, and when I stacked them, I realized I needed more data. Two days later, I set up for a full night and went to sleep. While I was sleeping, clouds rolled in, so only 40 good frames remained.
I captured the stars separately—20 exposures at 120 seconds each—and used those. In the end, this is how it turned out.
Technical information
- Telescope/Lens
- Sky-Watcher Quattro 8S
- Camera
- ToupTek IMX571
- Mount
- Sky-Watcher EQ6 Pro
- Guide Scope
- 50mm Finder Scope
- Guide Camera
- T7M
- Accessories
- Sharpstar 0.95x MPCC
- Software
- N.I.N.A., Pixinsight, Adobe Photoshop
- Location
- Екатеринбург, район озера Глухое., Россия
Light pollution
Orange, Bortle 6 zone
- Date taken
Exposure
- 60 × 300″ · ISO/Gain: 152 · OPTOLONG L-eXtreme ·
- 20 × 120″ · ISO/Gain: 20 ·
Total exposure: 5 h 40 m









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