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Ursa Astronomical Association
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Ursa Astronomical Association

NGC 7790, NGC 7788 - 2.12.2022 at 20.22 Orimattila, Artjärvi, Tähtikallio Observation number 111159

Visibility I / V

Photographing nebulae and galaxies on the opening night of Tähtikallio's little Christmas weekend would not have made sense due to the moon phase. The weather forecast still looked quite bad in the morning, but the tearing of the cloud cover gave the cell the opportunity to capture two fine and dense open star clusters.

More similar observations
Additional information
  • Observation target
    • Deep space object
  • Designation
    • NGC 7790, NGC 7788
  • Constellation
    • Cassiopeia
  • Field of view
  • 31 arc minutes
  • Weather
    • Vaihtelevaa pilvisyyttä, 73 % Kuu noin 30 asteen korkeudella

  • Darkness
    • Mediocre
  • Seeing
    • Average
  • Limiting magnitude
    • 5
  • Star clusters and asterisms
    • Open cluster info

      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.

Technical information

Alluna RC16, C415/3320, Moravian G4-16000 EC Mark II, with filter L 11 x 30 s, 20 x bias, 20 x dark, 10 x flat, 3x binning, image cropped

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