Celestial hemisphere:  Northern  ·  Constellation: Gemini (Gem)  ·  Contains:  PK205+14.1  ·  Sh2-274
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Medusa Nebula (SH2-274) - SHO, Jon Gascoyne
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Medusa Nebula (SH2-274) - SHO

Getting plate-solving status, please wait...
Medusa Nebula (SH2-274) - SHO, Jon Gascoyne
Powered byPixInsight

Medusa Nebula (SH2-274) - SHO

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Description

The Medusa Nebula is a planetary nebula in the constellation of Gemini. It is also known as Abell 21 and Sharpless 2-274. It was originally discovered in 1955 by astronomer George O. Abell, who classified it as an old planetary nebula. Until the early 1970s, the nebula was thought to be a supernova remnant. With the computation of expansion velocities and the thermal character of the radio emission, Soviet astronomers in 1971 concluded that it was most likely a planetary nebula.
Source: Wikipedia

Imaging data acquired by @Alpha Zhang  using  AFIL-2, Yunling Observatory, Kunming, China
Available from the Starbase website https://starbase.insightobservatory.com/inventory

Acquisition (19/12/21 - 28/12/21):
  • 16 x 900 sec Ha (bin x1)
  • 12 x 900 sec SII (bin x1)
  • 12 x 900 sec OIII (bin x1)

Integration: 10 hrs 0 min

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Medusa Nebula (SH2-274) - SHO, Jon Gascoyne