Celestial hemisphere:  Northern  ·  Constellation: Pegasus (Peg)  ·  Contains:  NGC 7317  ·  NGC 7318  ·  NGC 7319  ·  NGC 7320

Image of the day 10/05/2023

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    Stephan's Quintet, Roberto Marinoni
    Stephan's Quintet
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    Stephan's Quintet

    Image of the day 10/05/2023

    Getting plate-solving status, please wait...
      Stephan's Quintet, Roberto Marinoni
      Stephan's Quintet
      Powered byPixInsight

      Stephan's Quintet

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      Description

      Stephan's Quintet is a group of five galaxies in the constellation Pegasus, with apparent magnitudes between 12.6 and 13.9; it was discovered in 1877 by the French astronomer Édouard Stephan at the Marseille Observatory (France).
      In the image below (Wikipedia source) the names of the galaxies are detailed: the image has been rotated to make it correspond to my image.

      StephansQuintettIlustrated_1.jpg

      The Stephan Quintet galaxies are not really connected to each other: according to redshift values measured, NGC 7320 could be 32 million light-years away from us, while the other four are at distances between 280 and 340 million light-years. NGC 7320 would therefore appear inside the Quintet only as a matter of perspective.
      Finally, I was a little surprised to see such a “bright” galactic nebulosity all around this field of view!

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      Stephan's Quintet, Roberto Marinoni