Celestial hemisphere:  Northern  ·  Constellation: Cepheus (Cep)
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Sh2-155, John Bozeman
Sh2-155
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Sh2-155

Getting plate-solving status, please wait...
Sh2-155, John Bozeman
Sh2-155
Powered byPixInsight

Sh2-155

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Description

Sh2-155 (also designated Caldwell 9, Sharpless 155 or S155) is a diffuse nebula in the constellation Cepheus, within a larger nebula complex containing emission, reflection, and dark nebulosity. It is widely known as the Cave Nebula, though that name was applied earlier to Ced 201, a different nebula in Cepheus. Sh2-155 is an ionized H II region with ongoing star formation activity, at an estimated distance of 725 parsecs (2400 light-years) from Earth.

Red and blue plates

NASA/ESA, the DSS-II and GSC-II Consortia (with images from the 'Palomar Observatory-STScI Digital Sky Survey of the northern sky, based on scans of the Second Palomar Sky Survey are copyright ) 1993-1999 by the California Institute of Technology)

Processed with GraXpert, PixInsight and Photoshop 2023

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Sh2-155, John Bozeman