page_title: NGC 2392
section_title: Historic data
hierarchical_section_title: NGC 2392 / Historic data
caption_attribution_description: English: NGC 2392, Eskimo Nebula
context_page_description: NGC 2392, also known as Caldwell 39, Eskimo Nebula, Clown-faced Nebula, and Lion Nebula, is a bipolar double-shell planetary nebula. It was discovered by astronomer William Herschel in 1787. The formation resembles a person's head surrounded by a parka hood. It is surrounded by gas that composed the outer layers of a Sun-like star. The visible inner filaments are ejected by a strong wind of particles from the central star. The outer disk contains unusual, light-year-long filaments.
  NGC 2392 lies about 6500 light-years away, and is visible with a small telescope in the constellation of Gemini.
context_section_description: The nebula was discovered by William Herschel on January 17, 1787, in Slough, England. He described it as "A star 9th magnitude with a pretty bright middle, nebulosity equally dispersed all around. A very remarkable phenomenon." NGC 2392 WH IV-45 is included in the Astronomical League's Herschel 400 observing program.
caption: NGC 2392 in 32 inch telescope
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