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| Catalogue and alternative designations | Trifid
Nebula, M20, NGC 6514
|
| Type | Combined emission and reflection nebula |
| Position | 18 02 23, -23 01 48 |
| Constellation | Sagittarius |
| Camera and Telescope | STXL16200 and 36.8 cm Ritchey Chretien |
| Focal Ratio | F9 |
| Exposure Details | This is a LHaRGB image (normal colour augmented by hydrogen alpha to bring out the emission nebulosity). Luminance was 70 minutes (unbinned), Red = Green = Blue = 50 minutes, Hydrogen Alpha = 90 minutes (all binned 2x2) |
| Description | The Trifid nebula needs no introduction as it is one of the most popular deep sky objects. It is a near neighbor in the sky to the Lagoon Nebula (M8). The Trifid structure is visible in small telescopes. The distance is about 4100 light years and the nebula is about 28 arcmins across. |