Wallpaper author:
ian howarth
07 Jul 2020
A Red Rose in the Sky
Although reminiscent of a planetary nebula, the Rosette Nebula in Monoceros is actually an ionized, or HII, region, shaped like a torus (or ring doughnut). In the 'hole' of the doughnut lies the open cluster NGC 2244, while to the south (right in this image) lies the lesser-known nebula LBN 970.
This image is composed from narrow-band images combined in a pseudo-real-colour palette; the red colour comes from strong hydrogen-line emission.
Dataset from which the image was processed
Caldwell 49
14 credit
- Type of target............................................................................................................................Emission Nebula
- Camera............................................................................................................................FLI PL16083
- Target coordinates............................................................................................................................RA 97.9167 Dec 4.95
- Hemisphere............................................................................................................................Northern
- Telescope location............................................................................................................................Spain
- Transient event............................................................................................................................No
- Observed on............................................................................................................................28 Sept 2019 - 27 Nov 2022
Filter | Avg Exp (s) | Total Exposure | Subframes |
|---|---|---|---|
| Halpha | 629 | 7h10m | 41 |
| Luminance | 146 | 1h40m | 41 |
| Blue | 241 | 2h45m | 41 |
| Red | 234 | 2h40m | 41 |
| Green | 249 | 2h50m | 41 |