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Messier 17 wide field in Sagittarius

Astrophotography from Ursa Major Observatory @ ROSA

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deeplook.at
deeplook.at
2017-07-24
Sigma Art 135mm F1.8 DG HSM @ f/2.8
10micron GM1000 HPS
33x2 min ISO 400
1h 06min
Camera:
Nikon D810A
Bad transparency because of Calima Image acquisition by CEDIC team (Christoph Kaltseis, Bernhard Hubl, Markus Blauensteiner, Michael Hanl) Image processing by Christoph Kaltseis
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Emission nebula
Sgr
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Messier 17 (also known as The Omega Nebula or the The Swan Nebula) is an emission nebula in constellation Sagittarius. Its distance is estimated to 5,000 light-years and it spans some 15 light-years in diameter. The cloud of interstellar matter of which this nebula is a part is roughly 40 light-years in diameter and has a mass of 30,000 solar masses. The total mass of the Omega Nebula is an estimated 800 solar masses. Therefore, Messier 17 is considered one of the brightest and most massive star-forming regions of our galaxy.   
11’
5 000 Ly
+ 6.0