Starry sky image - 2.1.2022 at 01.20 - 2.1.2022 at 01.32 Pyhäjärvi Observation number 103722

• Observation target
• • Starry sky image
• Constellation
• • Orion

• Star clusters and asterisms
• • Open cluster

    Open cluster is an irregular group of tens or hundreds of stars. It can be visible as separate stars or a bit fuzzy spot with small instrument.
    
    

    

    There is the open cluster M52 on the right edge of the image. The red emission nebula is the Bubble Nebula. Image Jyrki Grönroos.

     

    

    The open cluster M45 aka Pleyades. Image Juha Parvio.

     

    

    The pair of the open clusters NGC 869 and NGC 884 aka the Double Cluster in Perseus. Image Lauri Kangas.

     

    

    M34 is also an open cluster in Perseus. Image Teppo Laitinen.

     

    

    The Wild Duck Cluster M11 is an exceptional dense open cluster. Image Jaakko Asikainen.

     

     

    

    The Ptolemy's Cluster M7 is located in a rich-star area of The Milky Way in Sagittarius. Image Toni Veikkolainen.

  • Asterism

    An asterism is  a group or a pattern of stars, where the stars are apparently close each other, but in reality there are located far each other

    The star of the asterism are not gravitionally connected, such as in the open and globular cluster.  They only seem to be close each, because they are in the same direction looked from the Earth.

     

    

    Orionin vyön kolme tähteä muodostavat yhdenlaisen asterismin. Kuva Voitto Pitkänen.

Canon 6D Mark II + Sigma Art 14mm, tracking: Star Adventurer 2i

8x60s, f / 2.2, ISO 2000

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