M 17  -  wide field

40%  resolution (2.8MB)

Object data of M17

Object type: Emission nebula
Size: 11'
Magnitude: 6.0 mag
Constellation: Sgr
Distance: 5,000 Ly
Notes: 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.

Exposure data

Date: 2017-07-24
Location: ATHOS Centro Astronomico / La Palma (900m)
Telescope: Sigma Art 135mm F1.8 DG HSM @ f/2.8
Camera: Nikon D810A (ISO400)
Mount: 10micron GM1000 HPS
Exposure time: 33x2min
Exposure time total: 1h 06min

Image acquisition by CEDIC team (Christoph Kaltseis, Bernhard Hubl, Markus Blauensteiner, Michael Hanl)

Image processing by Christoph Kaltseis

Bad transparency because of Calima