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Abell 21 (The Medusa Nebula)

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  • Bernard Miller
    Hi, The link below is to Abell 21 (The Medusa Nebula). This is a planetary nebula about 1500 light years away in the constellation Gemini. This is an
    Message 1 of 1 , Mar 19, 2013
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      Hi,



      The link below is to Abell 21 (The Medusa Nebula). This is a planetary
      nebula about 1500 light years away in the constellation Gemini. This is an
      interesting PN due to the asymmetry in its composition. This could be
      because it is a very old PN. I chose this framing because the upper right
      corner of the image contains open cluster NGC2395. Comments and suggestions
      welcomed.




      http://www.azstarman.net/PLN205.htm



      Bernard









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