Caldwell 3
Photo description / processing
Quite dim, as it turned out. I decided to go with 120-second exposures; the moon plus thin clouds caused blurring. I think at least 5 hours are needed for the Ha background and the beauty.
Technical information
- Telescope/Lens
- Askar 71F
- Camera
- ZWO ASI585MC Pro
- Mount
- JUWEI 14
- Guide Scope
- ToupTek GS-200 AR
- Guide Camera
- ZWO ASI662MC
- Accessories
- CAA, EAF, EFW, ASIAIR MINI, Askar Reducer x 0.75, Gemini PowerBox
- Software
- Siril, Photoshop, Lightroom, StarNet++
- Location
- Самара, Россия
Light pollution
Yellow, Bortle 5 zone
- Date taken
Exposure
- 60 × 120″ · ISO/Gain: 200 · Optolong UV IR Cut ·
Total exposure: 2 h 0 m
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