Scorpius & Ophiuchus nebulae
See also the 46 megapixel zoomable version.
Technical information
| Date & time | 2019 July 3rd/4th 22:46 ~ 03:53 CAT |
| Location | Tivoli Astro-Farm, Namibia |
| Optics | 2 x Samyang 135mm f/2.0 ED UMC |
| Camera | 2 x Nikon D810A |
| Mount | iOptron CEM25P |
| Composition | 9 pane mosaic (3 columns, 3 rows) |
| Exposure | 25 x 2 minutes per pane 135 mm, f/2, ISO 1600 7.5 hours total |
| Calibration | 40 bias frames per camera 40 flat frames per camera |
| Processing | DeepSkyStacker: calibrate, align, stack Microsoft ICE: compose mosaic Adobe Photoshop CC: subtract skylight, ACR filter |
| Original resolution | 8119 x 5726 pixels See zoomable version |
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