Trifid nebula M20 & open cluster M21
Photo description / processing
The Trifid Nebula M20 and the open star cluster M21. Located in the constellation Sagittarius.
Balcony in Kharkiv, red zone of light pollution.
Technical information
- Telescope/Lens
- Sky-Watcher 130PDS
- Camera
- Canon EOS 550D
- Mount
- Sky-Watcher EQ3-2
- Guide Scope
- No guide
- Accessories
- Sky-Watcher Coma Corrector 2-inch
- Software
- DeepSkyStacker, FitStacker, PhotoShop
- Location
- Kharkiv, Ukraine
Light pollution
Red, Bortle 7 zone
Exposure
- 454 × 15″ · ISO/Gain: 6400
Total exposure: 1 h 54 m
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