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taivaanvahti(at)ursa.fi

Ursa Astronomical Association

IC 2944 - 4.5.2022 at 00.00 Observatorio El Sauce, Rio Hurtado, Chile Observation number 106956

Visibility V / V

Jari Saukkonen, Kirkkonummen komeetta

Finally again in the picture (oi). It doesn’t take more than a year to get Chile’s remote equipment, plagued by misfortune and equipment failure, back under attack. Murphy had to be cursed very many times, the delivery times of the equipment are what they are and it is not made any easier by the rigidity of the logistics in the middle of nowhere. Fortunately, the technicians at the telescope farm are first class, so isn’t this starting to roll again.

The object of the new first light was selected to be the open constellation IC 2944 found in the constellation of Centauri and the surrounding emission nebula area which for some reason is known as the "running chicken" mist. I don’t know what the inventor of the name has eaten, I kind of managed to bonga some kind of chicken out of the picture but it’s hardly what the denominator meant. The image area is full of many interesting formations, and as a bonus, there is also a small planetary nebula PK294-00.1 in the upper right corner of the image. The bright star in the picture is the Lambda Centaur, about mag +3.1, meaning it stands out easily to the naked eye as long as the viewer is in the right (southern) hemisphere.

The mist is imaged with narrowband filters and stained using an approximately SHO palette. Natural colors have been applied to the stars using RGB filters.

Figure 1: The whole field, about 2 degrees in diameter

Figure 2: My own view of the location of the "running hen."

Figure 3: Interesting "mountain scenery" from the edge of the fog

Figure 4: The open set of IC 2944 and the darker and denser so-called Bok globules, which the radiant pressure of the stars has failed to blow into the winds of the sky



More similar observations
Additional information
  • Observation target
    • Deep space object
  • Designation
    • IC 2944
  • Constellation
    • Centaurus
  • Field of view
  • 2 degrees
  • Darkness
    • Excellent
  • Nebulae
    • Emission nebula info

      In an emission nebula the hot stars nearby cause the gas glow. This should not mix with reflection nebula, where the gas is only lit up by nearby stars.

      The appearance of a gas nebula is irregular, and the fainter parts of it need bigger instruments to be visible.

       

      Emssion nebulae in Cepheus. The bigger part is composed of the nebulae Cederblad 214 (Ced214) and NGC 7822. The lower round nebula is called Sharpless 170 (Sh2-170). Image J-P Metsävainio.

       

      The Orion nebula. Image Samuli Vuorinen.

       

      In this 4-degree-field there are emission nebulae Sh2-157, Sh2-158, Sh2-159, Sh2-161 and Sh2-162 (or NGC 7635 aka Bubble Nebula) and open clusters M52 and NGC 7510. Image Juha Kepsu.

       

      NGC 281 aka Pacman Nebula. The object is in Cassiopeia. Image J-P Metsävainio.

       

      NGC 896 in Cassiopeia is the tip of Heart Nebula (IC 1805). Image Timo Inkinen.

    • Planetary nebula info

      Planetary nebula is the remnant of a death star. It could be ring-shaped, disc-like or spread out rather irregularly.

      With the exception of some nearest objects planetary nebulae have a small apparent diameter and they need a rather big instrument to be visible.

       

      Planetary nebula M27 aka The Dumbbell Nebula in Vulpecula. Image Juha Parvio.

       

      M76 aka The Little Dumbbell Nebula in Perseus. Image Rauno Päivinen.

  • 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

Telescope self-built 10 "f / 4.5 Newtonian astrograph. Imaging camera cooled ASI6200, guide camera ASI174-mini and tripod 10Micron GM1000HPS. Total exposure time 33h 16min, of which fog 31h 50min with narrowband filters á 10min and the rest of the stars in RGB colors ámin.

Comments: 1 pcs
Joni Virtanen - 26.5.2022 at 09.22 Report this

Todella upeaa jälkeä!

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