Wallpaper author:
Mark Johnston
04 Dec 2025
AR4274 sunspot region Nov 11 2025
November 11 2025 AR4274 spit out X and M class flares and caused unprecedented aurora visible as far south as southern Europe and the southern US. This is a high resolution view of that active region taken that day. The dataset includes the original SER capture video, a stacked TIF and a final processed JPG. Seeing 4/5.
Dataset from which the image was processed
AR4274 sunspot region Nov 11 2025
12 credit
- Type of target............................................................................................................................Sun
- Camera............................................................................................................................Player One Apollo-M IMX174M with cooler
- Target coordinates............................................................................................................................RA 0 Dec 0
- Hemisphere............................................................................................................................Northern
- Telescope location............................................................................................................................United States of America
- Transient event............................................................................................................................Yes
- Observed on............................................................................................................................11 Nov 2025 - 11 Nov 2025
Filter | Avg Exp (s) | Total Exposure | Subframes |
|---|---|---|---|
| Halpha | - | 8m | 2000 |