Wallpaper author:
Ray Yerbury
18 Nov 2025
M20 HSO
Siril
Use of Telescope Live HSO script / starnet star removal / initial stretch of starless image
GIMP
Colour adjustments / sharpening
Siril
Colour stretch / recombine starless & starmask
Dataset from which the image was processed
M20
5 credit
- Type of target............................................................................................................................Emission Nebula
- Camera............................................................................................................................QHY 600M
- Target coordinates............................................................................................................................RA 270.6038 Dec -23.0018
- Hemisphere............................................................................................................................Southern
- Telescope location............................................................................................................................Chile
- Transient event............................................................................................................................No
- Observed on............................................................................................................................16 Jun 2023 - 25 Oct 2023
Filter | Avg Exp (s) | Total Exposure | Subframes |
|---|---|---|---|
| Halpha | 321 | 2h30m | 28 |
| SII | 289 | 2h15m | 28 |
| OIII | 289 | 2h15m | 28 |