Thor's Helmet - emission nebula
Thor's Helmet, also known as the Duck Nebula, is a emission nebula located in the constellation Canis Major.
Thor's Helmet is magnitude and is in size. For reference, the full moon is 30' (arc minutes) or 0.5° in size.
- Thor's Helmet
- Alt Name:
- Duck Nebula
- emission nebula
- Canis Major
- NGC 2359
* One can see up to magnitude 7-8 objects with perfect eyes under ideal dark sky conditions.