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Contact information

Skywarden,
Ursa Astronomical Association
Kopernikuksentie 1
00130 Helsinki
taivaanvahti(at)ursa.fi

Ursa Astronomical Association

NGC 772 - 4.12.2021 at 20.47 Orimattila, Artjärvi, Tähtikallio Observation number 103535

Visibility I / V

Toni Veikkolainen, Veikko Mäkelä, Kari Laihia, Keski-Uudenmaan Altair

This spiral galaxy does not cause great Joyful Screams. The center stood out clearly but the branches poorly. Longer single exposures come into play if I choose to shoot the subject in the future.



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Additional information
  • Observation target
    • Deep space object
  • Designation
    • NGC 772
  • Constellation
    • Aries
  • Field of view
  • 31 arc minutes
  • Weather
    • Vähän pilvisyyttä, uusikuu, kova pakkanen

  • Darkness
    • Good
  • Seeing
    • Good
  • Limiting magnitude
    • 5.5
  • Galaxies
    • Spiral galaxy info

      Spiral galaxy is a stellar system where there are outwards arched spiral arms from roundish (spiral galaxies) or bar-shaped (barred spiral galaxies) central condensation.

      The apparent shape of spiral galaxied depends on out observation direction. From above they are quite round. From the side they lens-shaped with a bulge in the middle.

      Generally a rather large instrument, good weather conditions and observational expereince are needed to see spiral arms. Usually spiral galaxies look like a fuzzy spots.

      Spiral galaxy M33 in Triangulum. Image Tero Turunen.

       

      Andromeda Galaxy M31. There are also galaxies M110 (upper right corner) and M32 (lower left corner) in this image. Image Pekka Peura.

      M101 aka Pinwheel Galaxy in Ursa Major. Image Samuli Vuorinen.

       

      Spiral galaxy IC 342 aka Hidden Galaxy in Camelopardalis. Image Timo Inkinen.

      A sketch of spiral galaxy NGC 7331 in Pegasus. Image Juha Ojanperä.

Technical information

Alluna RC16, C415 / 3320, Moravian G4-16000 EC Mark II, with filter L 11 x 120 s, 20 x dark, 12 x flat, 20 x bias, 3x binning, image cropped

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