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M8 (NGC 6523)

Lagoon Nebula

Typ:H II region nebula with cluster
Constellation:Sagittarius
Size:90x40'
Distance:4.1 kLj
Brightness:6 mag
Position:RA:18h 03m 37s DEC:−24° 23′ 12″
Max. height:15.61°, Jun. (midnight at +50°N)
Show in Stellarium
Discovered:Giovanni Battista Hodierna, 1654
Details:Read more on Wikipedia

The Lagoon Nebula is a rather bright Hydrogen region and one of the few which can be recognized visually. With an extent of about 50x100 lightyears it contains several dense areas where new stars are forming.

The next image shows the full frame with after a manual edit (580mm, ASI2600MM, LRGB 1h).

And this is just a crop at the nebula itself: