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Ursa Astronomical Association
Kopernikuksentie 1
00130 Helsinki

Ursa Astronomical Association

M31 - 17.2.2021 at 20.00 - 17.2.2021 at 22.00 Järvenpää Observation number 96275

Visibility III / V

Eemil Pietilä, Ursa (Etelä-Suomi)

Even though it was severe frosts from mid-February, I still decided to try getting the Andromeda galaxy described. The last time I posted a picture of Andromeda here after my first attempt, the picture became relatively popular. This time I took a total of about 1400 images with a shutter speed of 5 seconds + 150 noise images, which means a total of about 2 hours of exposure. I then superimposed those images, and mainly edited the white balance, brightness, color brightness and saturation, and contrast. In the second picture, I added a little glow to the picture and emphasized the colors.

More similar observations
Additional information
  • Observation target
    • Deep space object
  • Designation
    • M31
    • Keskitaso
  • Constellation
    • Andromeda
  • Weather
    • Taivas oli käytössä selkeä muutamaa hentoa pilviharsoa lukuun ottamatta, eikä kuukaan ollut vielä edes puolikuu.
  • 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

Canon EOS 450D, 300mm, f / 5.6, ISO 1600, 5 sec

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