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.
About this image. The Ring Nebula, M57, NGC6720. This true color picture was taken using Ektachrome film at the prime focus of the Kitt Peak 4m telescope on September 1st 1973. This is unusual: normally color images are made by combining black and white images taken through different colored filters. The Ring Nebula, also known as M57 or NGC 6720, is found in the constellation Lyra. A spherical shell of glowing gas surrounds a central hot star. The nebula was formed when the central star ejected perhaps as much as ten percent of its mass, over a period of some millions of years.