Box Nebula - planetary nebula
Box Nebula , is a planetary nebula located in the constellation Ophiuchus .
Box Nebula is magnitude 11.5 and is 0.32' in size. For reference, the full moon is 30' (arc minutes) or 0.5° in size.
- Box Nebula
- planetary nebula
- NGC 6309
* One can see up to magnitude 7-8 objects with perfect eyes under ideal dark sky conditions.