Wallpaper author:
Rune Matthijssens
14 Dec 2020
SH2-308
The Cosmic Bubble or Dolphin-head nebula for reasons that are pretty clear, is an HII region in the constellation Canis Major. The nebula itself is very strong in the O3 channel and hardly can be seen in the Ha channel. It encapsulates a Wolf-Rayet star named EZ Canis Majoris, a star in its pre-supernova phase. The nebula is about 4530 ly away, some say 5870 ly.
Dataset from which the image was processed
Sh 2-308
14 credit
- Type of target............................................................................................................................Emission Nebula
- Camera............................................................................................................................FLI PL16803
- Target coordinates............................................................................................................................RA 103.5544 Dec -23.9283
- Hemisphere............................................................................................................................Southern
- Telescope location............................................................................................................................Australia
- Transient event............................................................................................................................No
- Observed on............................................................................................................................28 Aug 2020 - 08 Nov 2022
Filter | Avg Exp (s) | Total Exposure | Subframes |
|---|---|---|---|
| OIII | 657 | 9h40m | 53 |
| Halpha | 634 | 9h20m | 53 |
| SII | 255 | 3h45m | 53 |