Lagoon Nebula and Trifid Nebula (Steed Yu)

Celestial hemisphere: Southern · Constellation: Sagittarius (Sgr) · Contains: Lagoon Nebula · M 20 · M 8 · NGC 6514 · NGC 6523 · NGC 6526 · NGC 6530 · The star 7Sgr · The star 9Sgr · Trifid Nebula

Lagoon Nebula and Trifid Nebula

As the summer heat builds up and the heart of the Milky Way takes the C-position in the night sky, it's a great time to go "salvaging" all kinds of summer-exclusive deep-sky treasures from the sky.

In the constellation of Sagittarius, where the heart of the Milky Way is located, there is this pair of nebulae that are very impressive. The large one on the left, ranked eighth in Messier's catalog, is called the Lagoon Nebula; the small one on the lower right ranked twentieth in Messier's catalog, is called the Trifid Nebula.

The Lagoon Nebula, one of the two star-forming nebulae visible to the naked eye in the northern hemisphere, is between 4000 and 6000 light-years from Earth. It is a region of ionized hydrogen and is pink in color. On closer inspection, the nebula is also studded with dark spherical grains called Bok globulars. These are dense, dark clouds that are impervious to light, and you can imagine them as insect "cocoons" where new stars are being born. The nebula also interacts with the brightest stars in it, forming a spectacular tornado-like structure.

The Trifid Nebula, also a star-forming region, is not visible to the naked eye at a distance of about 4,100 light-years from Earth. It is less grand than the Lagoon Nebula but more detailed. It has both the pink color of the excited ionized hydrogen region, the blue color of the reflected starlight, and the opaque dark nebula that cuts the main body into three pieces, which is also the origin of the name of the Trifid Nebula.

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Status	Advanced failed
Started	...
Astrometry.net job	4577532
PixInsight job	N4H183N25O952T8NSYZTQIRYYJKDQCIG
PixInsight queue size	n/a
PixInsight stage	PLATE_SOLVING_IMAGE

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Lagoon Nebula and Trifid Nebula

Lagoon Nebula and Trifid Nebula

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Lagoon Nebula and Trifid Nebula

Lagoon Nebula and Trifid Nebula

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