Wallpaper author:
Charles Graham Taylor
14 Jul 2024
M101 Pinwheel Galaxy
The Pinwheel Galaxy (also known as Messier 101, M101 or NGC 5457) is a face-on, unbarred, and counterclockwise spiral galaxy located 21 million light-years (6.4 megaparsecs) from Earth in the constellation Ursa Major. It was discovered by Pierre Méchain in 1781 and was communicated that year to Charles Messier, who verified its position for inclusion in the Messier Catalogue as one of its final entries. (Re Wikipedia)
Dataset from which the image was processed
M101
13 credit
- Type of target............................................................................................................................Galaxy
- Camera............................................................................................................................FLI PL16803
- Target coordinates............................................................................................................................RA 210.8024 Dec 54.3488
- Hemisphere............................................................................................................................Northern
- Telescope location............................................................................................................................Spain
- Transient event............................................................................................................................No
- Observed on............................................................................................................................27 Dec 2019 - 11 Feb 2022
Filter | Avg Exp (s) | Total Exposure | Subframes |
|---|---|---|---|
| Luminance | 211 | 3h42m | 63 |
| Blue | 150 | 2h38m | 63 |
| Green | 143 | 2h30m | 63 |
| Red | 153 | 2h38m | 62 |
| Halpha | 29 | 30m | 62 |