18 Aug 2022
Trifid Nebula
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What amazes me is the gems that are beyond our eyesight. This majestic structure is The Beautiful Trifid Nebula also known as M20. Discovered by Charles Messier in 1764, M20 is a star-forming nebula located 9,000 light-years away from Earth in the constellation Sagittarius. A star-forming region in the plane of our galaxy, the Trifid does illustrate three different types of astronomical nebulae; red emission nebulae dominated by light from hydrogen atoms, blue reflection nebulae produced by dust reflecting starlight, and dark nebulae where dense dust clouds appear in silhouette.
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Data source:
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This is a LRGB image *5*180s using Planewave CDK24
M20
10 credit
Filter | Avg Exp (s) | Total Exposure | Subframes |
|---|---|---|---|
| Luminance | 67 | 40m | 36 |
| Red | 69 | 40m | 35 |
| Green | 857 | 8h20m | 35 |
| Blue | 65 | 38m | 35 |
| Halpha | 806 | 7h50m | 35 |