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Contains:  Omega nebula, M 17, NGC 6618
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Messier 17 - Omega Nebula, 


            Israel Barbosa de...
Messier 17 - Omega Nebula

Messier 17 - Omega Nebula

Technical card

Resolution: 5200x3462

Dates:July 25, 2014

Frames:Baader Planetarium Multi Purpose Coma Corrector : 3x240" ISO800 18C

Integration: 0.2 hours

Avg. Moon age: 28.23 days

Avg. Moon phase: 1.91%

Bortle Dark-Sky Scale: 1.00 job: 481460

RA center: 275.358 degrees

DEC center: -16.095 degrees

Pixel scale: 1.100 arcsec/pixel

Orientation: -102.032 degrees

Field radius: 0.954 degrees

Locations: Pousada dos Anões, Alto Paraíso de Goiás, Goiás, Brazil


The Omega Nebula is an H II region in the constellation Sagittarius. It is located in the rich starfields of the Sagittarius area of the Milky Way. It is between 5,000 and 6,000 light-years from Earth and 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. It is considered one of the brightest and most massive star-forming regions of our galaxy.

Observation data: J2000 epoch
Right ascension 18h 20m 26s
Declination −16° 10′ 36″
Distance 5,000-6,000 ly
Apparent magnitude (V) +6.0
Apparent dimensions (V) 11 arcmins
Constellation Sagittarius
Designations M17, NGC 6618, Swan Nebula, Sharpless 45, RCW 160, Gum 81

Source: Wikipedia

This image was captured during the 7th Brazilian Meeting of Astrophotography.

Technical data
ISO 800, total exposure time of 12 min (3 subs), only lights.



Israel Barbosa de...
License: None (All rights reserved)

Sky plot

Sky plot


Messier 17 - Omega Nebula, 


            Israel Barbosa de...