M35 - 7.3.2018 at 19.28 - 7.3.2018 at 20.30 Hyvinkää Observation number 71756

Visibility IV / V

Timo Inkinen, Ursa (Etelä-Suomi)

I described the so-called from the constellation of the "easy" deep sky object, i.e. the open constellation M35 Gemini. In the lower right corner of the picture, a more distant constellation of NGC 2158 could be accommodated, with yellow stars attracting attention. You see, this star cluster is clearly older in time than the M35 in the foreground, where the blue young stars are still shining brightly. The bright blue stars of NGC 2158 have burned out over time and therefore disappeared from view.

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8 6

Additional information

Observation target
- Deep space object
Designation
- M35
- Näyttävä
Constellation
- Gemini
Brightness in magnitudes
- 5.5
Field of view
45 arc minutes

Weather
- Taivaalla taas pakkassumupilveä, joten kirkas avonainen tähtijoukko oli looginen valinta kuvauskohteeksi.
Darkness
- Mediocre
Seeing
- Average
Limiting magnitude
- 4.5
Star clusters and asterisms
- Open cluster
  
  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

Filmed on March 4, 2018 and March 7, 2018 in two early evenings. The image received total exposure in five-minute partial exposures for 2h 30min and the shooting tube was a 10 ”RCT (1340mm focal length), the camera was a QSI 583ws CCD camera.

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M35 - 7.3.2018 at 19.28 - 7.3.2018 at 20.30 Hyvinkää Observation number 71756