description Sharpless 2-155 Overview
Sharpless 2-155, commonly known as the Cave Nebula, is a diffuse emission nebula in the constellation Cepheus. It was cataloged by astronomer Stewart Sharpless in his 1959 survey of H II regions and is associated with the Cepheus OB3 stellar association. The nebula's distinctive appearance, which includes dark dust lanes resembling a cave formation, makes it a target for astronomical observation and astrophotography.
help Sharpless 2-155 FAQ
What is the common name for Sharpless 2-155?
Sharpless 2-155 is more commonly known by astronomers as the Cave Nebula. It is a dim but visually striking H II region located in the constellation Cepheus.
How was the Cave Nebula cataloged?
It was cataloged in 1959 by astronomer Stewart Sharpless in his famous catalog of H II regions. It is specifically noted for its active Cep OB3 star-forming region.
Where is Sharpless 2-155 located in the night sky?
The nebula is located within the constellation Cepheus. It is physically linked to the Cep OB3 association, a cluster of young, hot stars driving its illumination.
Is the Cave Nebula easy to see with a backyard telescope?
Sharpless 2-155 is notoriously faint and difficult to observe visually without astrophotography equipment. Amateur astronomers usually require dark skies and specialized narrowband filters to capture its detail.
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