Requires a bachelor's degree in engineering and 4-6 years of experience in the field or in a related area. Familiar with a variety of the field's concepts, practices, and procedures. Relies on experience and judgment to plan and accomplish goals. Performs a variety of complicated tasks.
The Ring Nebula (also catalogued as Messier 57, M57 or NGC 6720) is a planetary nebula in the northern constellation of Lyra.
The Ring Nebula was the first planetary nebula discovered, so called because of its visual spherical appearance through telescopes in the past. It has a diameter a little under one light-year and is 3000 light-years from Earth (angular size 1.2 arc minutes).