Go-astronomy logo

Omega Nebula
Omega Nebula
Credit: NASA, ESA, Hubble

Omega Nebula - emission nebula

Omega Nebula, also known as the Swan Nebula and Horseshoe Nebula and Lobster Nebula, is a emission nebula located in the constellation Sagittarius.

Omega Nebula is magnitude 6 and is 11' in size. For reference, the full moon is 30' (arc minutes) or 0.5° in size.

      1. Name:
      2. Omega Nebula
      1. Alt Name:
      2. Swan Nebula
      1. Alt Name 2:
      2. Horseshoe Nebula
      1. Alt Name 3:
      2. Lobster Nebula
      1. Type:
      2. emission nebula
      1. Magnitude:
      2. 6
      1. Size:
      2. 11'
      1. Messier #:
      2. M17

    * One can see up to magnitude 7-8 objects with perfect eyes under ideal dark sky conditions.