Wallpaper author:
Jan Scheers
26 Oct 2021
Messier 55
Image of Messier 55 (M55, NGC 6809), also known as the Summer Rose Star, a globular cluster located in the constellation Sagittarius.
This LRGB-image was captured with CHI-1 (Planewave CDK24).
Combination of 5 one-click observations
Total exposure time: 295 minutes
2 subs of 600s & 10 subs of 300s with L
2 subs of 600s & 12 subs of 300s with R
2 subs of 600s & 10 subs of 300s with G
2 subs of 600s & 11 subs of 300s with B
Dataset from which the image was processed
M55
7 credit
- Type of target............................................................................................................................Globular Cluster
- Camera............................................................................................................................FLI ProLine PL9000
- Target coordinates............................................................................................................................RA 294.9988 Dec -30.9647
- Hemisphere............................................................................................................................Southern
- Telescope location............................................................................................................................Chile
- Transient event............................................................................................................................No
- Observed on............................................................................................................................25 Sept 2019 - 09 Sept 2021
Filter | Avg Exp (s) | Total Exposure | Subframes |
|---|---|---|---|
| Luminance | 265 | 1h55m | 26 |
| Red | 369 | 2h40m | 26 |
| Green | 276 | 1h55m | 25 |
| Blue | 288 | 2h | 25 |