10 Jul 2023
Discovered by Charles Messier in 1764, M20 is a star-forming nebula located 9,000 light-years away from Earth in the constellation Sagittarius. Also known as the Trifid Nebula, M20 has an apparent magnitude of 6.3 and can be spotted with a small telescope.
M20
3 credit
Filter | Avg Exp (s) | Total Exposure | Subframes |
|---|---|---|---|
| Halpha | 1000 | 2h30m | 9 |
| Blue | 200 | 30m | 9 |
| Luminance | 100 | 15m | 9 |
| Red | 100 | 15m | 9 |
| Green | 100 | 15m | 9 |