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Ursa Astronomical Association
Kopernikuksentie 1
00130 Helsinki

Ursa Astronomical Association

NGC 6888 - 11.9.2021 at 22.10 Oulu Observation number 101224

Visibility IV / V

Jaakko Asikainen, Oulun Arktos

After mostly repairing last season’s equipment breaks, it was nice to get back to the deep sky. Had to go back to manual focusing but it’s really easy (at least even when it’s not cold).

I photographed Sickle Mist NGC 6888 to begin the season. After processing, I noticed a wonderfully colored star in the middle of the fog. It is the Wolf-Rayet star WR-136 ( which is 600 thousand times brighter than the sun, a star at the end of its life with a special spectrum.

More similar observations
Additional information
  • Observation target
    • Deep space object
  • Constellation
    • Cygnus
  • Darkness
    • Bad
  • Seeing
    • Average
  • 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.

  • Designation
    • NGC 6888
  • Field of view
  • 0.6 degrees
Technical information

SW200P, QHY9m, NEQ6 Pro. 23x23minL, 21X21minRGB, 19x2minHa.

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