Contact information

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

Ursa Astronomical Association

M81 M82 - 19.4.2022 at 00.00 - 19.4.2022 at 01.00 Fregenal de la Sierra, Espanja Observation number 106301

Visibility III / V

Tapio Lahtinen, Tampereen Ursa

Sky model testing and galaxy imaging experiment with Ha filter.
I call these pictures galaxy skeletons;).



More similar observations
Additional information
  • Observation target
    • Deep space object
  • Designation
    • M81 M82
  • Constellation
    • Ursa Major
  • 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.

    • Irregular galaxy info

      Irregular galaxy is a stellar system without clear organized structure.

      Irregular galaxy IC 10 in Cassiopeia. Image Rauno Päivinen.

      Large Magellanic Cloud is the third nearest galaxy. Image Toni Veikkolainen.

Technical information

Sky-Watcher Esprit 100ED, 10 Micron GM 1000 HPS, Atik 460EX, 6x10 m Ha.

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