NGC 4657 NGC 4631
Technical information
- Telescope/Lens
- Sky-Watcher 200PDS
- Camera
- ZWO ASI1600MM Pro
- Mount
- Sky-Watcher AZ-EQ6 GT
- Guide Scope
- Sky-Watcher 200PDS
- Guide Camera
- Starlight Xpress Lodestar X2
- Accessories
- Baader MPCC Mark III
- Software
- MaxIm DL 5, CCDStack, StarTools, Fitswork
- Location
- Kiev, Ukraine
Light pollution
Red, Bortle 7 zone
Exposure
- 125 × 30″ · ISO/Gain: 15 · L
- 40 × 50″ · ISO/Gain: 76 · R
- 40 × 40″ · ISO/Gain: 76 · G
- 40 × 45″ · ISO/Gain: 76 · B
Total exposure: 2 h 33 m
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