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M17 (NGC 6618)

Omega Nebula

Typ:H II region nebula with cluster
Constellation:Sagittarius
Size:11'
Distance:5–6 kLj
Brightness:6 mag
Position:RA:18h 20m 26s DEC:−16° 10′ 36″
Max. height:23.82°, Jun. (midnight at +50°N)
Show in Stellarium
Discovered:Jean-Philippe Loys de Chéseaux, 1745
Details:Read more on Wikipedia

The Omega Nebula is probably the brightest and and most massive starforming region within our galaxy, the Milky Way. It is that bright, that it could be discovered back in 1745 by Jean-Philippe Loys de Chéseaux.

The next image shows the a larger crop after a manual edit (580mm, ASI2600MM, LRGB 1h), the full frame is shown on the next page: