Abell21 - Noaoann09008a
Credit:
T. A. Rector/University of Alaska Anchorage and H. Schweiker/NOIRLab/NSF/AURA and NOIRLab/NSF/AURAThe Medusa nebula, known scientifically as Abell 21, is an old planetary nebula some 1,500 light-years away in the constellation Gemini. It is estimated to be over 4 light-years across. This image was taken on Oct 24th, 2008 at the Mayall telescope with the mosaic camera, with [OIII] (assigned a blue color) and H-alpha (orange) filters This image was released during the 100 Hours of Astronomy webcast, "Around the World in 80 Telescopes" held from April 3-4, 2009, during the International Year of Astronomy 2009. View the recorded event from KPNO. See also this image of NGC 6520 from CTIO, which was also released during the webcast.
Credit:
T. A. Rector/University of Alaska Anchorage and H. Schweiker/NOIRLab/NSF/AURA and NOIRLab/NSF/AURAThis media was created by the National Optical-Infrared Astronomy Research Laboratory (NOIRLab).
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Relevante Artikel
MedusanebelAbell 21 oder Sharpless 2-274, auch bekannt als Medusa-Nebel ist ein ausgedehnter planetarischer Nebel mit geringer Flächenhelligkeit im Sternbild Zwillinge nahe der Ekliptik. Seinen Eigennamen verdankt der Nebel den schlangenartigen Gasfilamente, die ans Haar der Medusa erinnern. .. weiterlesen