Kronberger 61 also known as the "soccer ball" is a Nebula discovered by an amateur Astronomer in January, 2011, with the newer images having been taken by the Gemini Observatory. The nebula is named for Austrian Mattias Kronberger, who is a member of the amateur group Deep Sky Hunters. The object is estimated to lie 13,000 light-years away. They discovered the nebula while searching near the northern constellation of Cygnus. It is hoped that the discovery will help resolve a decades old debate: are stellar companions key to the formation and structure of planetary nebulae? The nebula is within a relatively small area which is currently being monitored by NASA’s Kepler planet finding mission and the light of the nebula is primarily due to the emissions from doubly-ionized oxygen.
- Mosher, Dave. "'Soccer Ball' Nebula Discovered by Amateur Astronomer". National Geographic.
- Moore, Kurt. "New Planetary Nebula Found By Amateur Astronomer". My Fox Houston.
- Jacoby, George. "Gemini Observatory Image Release". Gemini Observatory.