Wallpaper author:
Ken Abremski
26 Apr 2026
m12
The Gumball globular cluster in the constellation Ophiuchus. It is also designated as NGC 6218. The central region of the cluster contains a rather loose concentration of stars. The cluster contains a large population of red giants and a number of younger, blue stars that might have been formed by merging with older stars. The data were processed with PixInsight, RC-Astro Tools and Photoshop.
Dataset from which the image was processed
M12
4 credit
- Type of target............................................................................................................................Globular Cluster
- Camera............................................................................................................................FLI PL16803
- Target coordinates............................................................................................................................RA 251.8091 Dec -1.9485
- Hemisphere............................................................................................................................Northern
- Telescope location............................................................................................................................Spain
- Transient event............................................................................................................................No
- Observed on............................................................................................................................16 Jun 2020 - 27 Aug 2021
Filter | Avg Exp (s) | Total Exposure | Subframes |
|---|---|---|---|
| Red | 319 | 1h25m | 16 |
| Blue | 340 | 1h25m | 15 |
| Green | 300 | 1h15m | 15 |
| Luminance | 240 | 1h | 15 |