Contact information

Ursa Astronomical Association
Kopernikuksentie 1
00130 Helsinki

Ursa Astronomical Association

IC 342 - 5.10.2015 at 01.23 Oulu Observation number 43401

Visibility II / V

Jaakko Asikainen, Oulun Arktos

My Newton tube calibration fails when light leaks or is reflected through an undefined pass. I thought I had already found the problem with the M54 adapter tearing, and clogging it helped the situation, but there were still dust artifacts left after calibration. It took five hours to solve the problem, after which I left the camera to shoot for the rest of the night. The relentless adjustments eventually produced even some result in the signs of the Giraffe Galaxy.

More information:

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Additional information
  • Observation target
    • Deep space object
  • Designation
    • IC 342
    • Heikosti näkyvä
  • Constellation
    • Camelopardalis
  • Field of view
  • 0.6 degrees
  • Darkness
    • Good
  • Seeing
    • Good
  • 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

SW200P, NEQ6 Pro, QHY9m, Baader filters. 25x3min L + 15x3min colors.

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