The Crescent Nebula NGC 6888
Photo description / processing
The signal was accumulated during astronomical twilight (Sun 11 degrees below the horizon) at 55 degrees latitude from July 7th to 10th. For capturing Ha and OIII, I used HighGain mode; for G, I used Extended FullWell. The integration was done in the HaGO palette—essentially a "near-full-color" RGB.
Technical information
- Telescope/Lens
- Bresser Messier NT 203/1000
- Camera
- QHY268M
- Mount
- iOptron GEM45EC
- Guide Scope
- QHYCCD OAG-M
- Guide Camera
- QHYCCD 178M
- Accessories
- SharpStar 1x ED MPCC, Optolong L-Pro Filter, QHY CFW-L
- Software
- NINA, PHD2, SIRIL, PS
Exposure
- 32 × 180″ · ISO/Gain: 56 · Optolong Ha 3nm ·
- 24 × 180″ · ISO/Gain: 0 · Optolong G ·
- 42 × 180″ · ISO/Gain: 56 · Optolong OIII 3nm ·
Total exposure: 4 h 54 m
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