Calabash Nebula [SEP] constellation
Calabash Nebula
The Calabash Nebula, also known as the Rotten Egg Nebula or by its technical name OH 231.84 +4.22, is a protoplanetary nebula (PPN) 1.4 light years (13 Pm) long and located some 5,000 light years (47 Em) from Earth in the constellation Puppis. The name "Calabash Nebula" was first proposed in 1989 in an early paper on the expected nebular dynamics, based on the nebula's appearance 
The Calabash is an almost certain member of the open cluster Messier 46, as it has
, NGC 2438 is a larger object in the background. 
External links.
- PIA04228: Rotten Egg Nebula, NASA Planetary Photojournal
- The Rotten Egg Planetary Nebula, APOD 1999 November 1
- The Making of the Rotten Egg Nebula, APOD 2001 September 3
- Calabash Nebula at Constellation Guide
- Calabash Nebula imaged and interpreted by Bo Reipurth at the European Southern Observatory in 1987