Messier 17
Omega Nebula in Hα

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Exposure data

Photographer:

Jürgen Stöger

Optics:

Takahashi FSQ106ED f/5 (main)
Orion ED80 (guide)

Mount:

Fornax 51

Cameras:

Atik 383L+ (main)
ASI 120MM (guide)

Exposure:

Hα=110 min.

Conditions:

about 4.5 mag

Moon:

below horizon

Location:

Katzelsdorf

Date:

6/7 August 2016

Remarks:

quick and dirty processing

 

 

Messier 17 object data
RA: 18h20.5m
Dec: -16° 10.5'
Size: 11'
Brightness: 6 mag
Distance: 5000 - 6000 light years

 

 

 

The Omega Nebula, also known as the Swan Nebula, Checkmark Nebula, and the Horseshoe Nebula (catalogued as Messier 17) is an H II region in the constellation Sagittarius. It was discovered by Philippe Loys de Chéseaux in 1745. Charles Messier catalogued it in 1764. It is located in the rich starfields of the Sagittarius area of the Milky Way.