Contact information

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

Ursa Astronomical Association

NGC 6842 - 10.9.2021 at 22.28 Orimattila, Artjärvi, Tähtikallio Observation number 101959

Visibility II / V

Toni Veikkolainen, Keski-Uudenmaan Altair

The otherwise uniform nature of this planetary nebula seemed to be broken by one dark spot. The center star of the target stood out well but the stars in the background also seemed to be inside the fog disk.



More similar observations
Additional information
  • Observation target
    • Deep space object
  • Designation
    • NGC 6842
  • Constellation
    • Cygnus
  • Field of view
  • 28 arc minutes
  • Weather
    • Kuu horisontin alla, hieman pilviharsoa

  • Darkness
    • Good
  • Seeing
    • Good
  • Limiting magnitude
    • 6
  • Nebulae
    • 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.

Technical information

Alluna RC16, C415 / 3320, Moravian G4-16000 EC Mark II, with filter L 11 x 120 s, 20 x bias, 20 x dark, 12 x flat, 3x binning, cropped image

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