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Contact information

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

Ursa Astronomical Association

NGC 6820, NGC 6823 - 21.9.2021 at 22.45 - 21.9.2021 at 23.30 Ulvila Observation number 101412

Visibility III / V

Vesa Puistovaara, Porin Karhunvartijat

The constellation NGC 6823 is surrounded by nebula NGC 6820. In the picture, the open star cluster in the direction indicated by the most spectacular gas pillar of the nebula was formed by about 2 million. years ago, and it forms new stars from the surrounding material.

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(Source: Nasa - https://apod.nasa.gov/apod/ap141008.html



More similar observations
Additional information
  • Observation target
    • Deep space object
  • Designation
    • NGC 6820, NGC 6823
  • Constellation
    • Vulpecula
  • 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.

Technical information

Boren-Simon 8 "f / 2.8, SBIG ST-8300M h-alpha 9x5min = 45min

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