Celestial hemisphere:  Southern  ·  Constellation: Sagittarius (Sgr)  ·  Contains:  B85  ·  M 20  ·  NGC 6514  ·  Sh2-30  ·  Trifid Nebula
M20 - Trifid Nebula, Graham Conaty
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M20 - Trifid Nebula, Graham Conaty
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Description

Messier 20, also known as the Trifid Nebula is an H II region in the constellation Sagittarius around 4100 light-years from Earth.

Discovered by Charles Messier on June 5, 1764 its name means 'three-lobe'.

The object is an unusual combination of an open cluster of stars, an emission nebula, a reflection nebula and a dark nebula.

The most massive star that has formed in this region is HD 164492A, an O7.5III star with a mass more than 20 times the mass of the Sun. This star is surrounded by a cluster of approximately 3100 young stars.

Captured using the Telescope Live CHI-1 telescope at El Sauce Observatory the Rio Hurtado Valley, Chile, South America the final result comprises 1hr 18mins of broadband data.

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M20 - Trifid Nebula, Graham Conaty