0[degrees] east from Lambda ([lambda]) Cygni to the protoplanetary Egg Nebula (PK 80-6 1).
The Egg Nebula is easily visible as a little fuzzy spot even in my 130-mm scope at 63x.
The Egg Nebula
(above, left), in particular, provides astronomers with a look at a star in the act of shedding its atmosphere.
The article gives the early history of the now-famous Egg Nebula
- the first-discovered proto-planetary nebula.
It will then look much like the Egg Nebula
, pictured at right.
In this article you can follow an evolutionary sequence, from the Egg Nebula (a proto-planetary) below to the Butterfly Nebula (an extremely young planetary) on page 31 and finally to Hubble 5 (a true planetary nebula) on the facing page.
Merrill named it the Egg Nebula, based on its appearance on Palomar Observatory Sky Survey plates.
This discovery confirmed that the Egg Nebula was not unique.
A molecular torus similar to that observed in the Egg Nebula has been found in the planetary nebula NGC 7027, shown on page 35.
The most famous protoplanetary is the Egg Nebula
in Cygnus, shown on the previous page (May issue, page 12).
CRL2688, also known as the Egg Nebula
, lies some 3,000 light-years away in Cygnus.