Wallpaper author:
Dev Prana
20 Dec 2025
Caldwell 49, aka Rosette (SHO)
The Rosette Nebula is an H II region located near one end of a giant molecular cloud in the Monoceros region of the Milky Way Galaxy. The open cluster NGC 2244 is closely associated with the nebulosity, the stars of the cluster having been formed from the nebula's matter. I combined CMOS data from both the AUS2 and SPA1 using Astro Pixel Processor to create this final closeup mosaic, using Pixinsight and Paintshop Pro Ultimate, enjoy!
Dataset from which the image was processed
Caldwell 49
6 credit
- Type of target............................................................................................................................Emission Nebula
- Camera............................................................................................................................QHY 600M
- Target coordinates............................................................................................................................RA 98.07658 Dec 5.0051
- Hemisphere............................................................................................................................Southern
- Telescope location............................................................................................................................Australia
- Transient event............................................................................................................................No
- Observed on............................................................................................................................27 Feb 2024 - 25 Mar 2024
Filter | Avg Exp (s) | Total Exposure | Subframes |
|---|---|---|---|
| Halpha | 281 | 2h30m | 32 |
| SII | 300 | 2h40m | 32 |
| OIII | 319 | 2h45m | 31 |