Wallpaper author:
Nigel Stanbury
06 Apr 2026
Dragon's Egg Nebula in HSO
This emission nebula energised by the central O-type star, is an unusual object. It was surprisingly difficult to bring out the fainter details in Photoshop despite trying various techniques like channel masks and Lab colours. In the end I just used the more usual selected colour masks.
Dataset from which the image was processed
NGC 6164
18 credit
- Type of target............................................................................................................................Emission Nebula
- Camera............................................................................................................................FLI ProLine PL9000
- Target coordinates............................................................................................................................RA 248.4683 Dec -48.11124
- Hemisphere............................................................................................................................Southern
- Telescope location............................................................................................................................Chile
- Transient event............................................................................................................................No
- Observed on............................................................................................................................28 Jul 2021 - 17 Apr 2022
Filter | Avg Exp (s) | Total Exposure | Subframes |
|---|---|---|---|
| SII | 600 | 8h20m | 50 |
| Halpha | 600 | 8h20m | 50 |
| OIII | 600 | 8h20m | 50 |