NGC 7635 - 10.9.2021 at 22.00 - 10.9.2021 at 22.20 Janakkala, Tervakoski Observation number 101212

Visibility III / V

Petri Kuossari, Riihimäen tähtit. yhdistys

NGC 7635, also known as Bubble Nebula, was the first item on the evening's observation list.

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Additional information

Observation target
- Deep space object
Constellation
- Cassiopeia
Darkness
- Excellent
Seeing
- Excellent

Nebulae
- Emission nebula
  
  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 7635

Technical information

eVscope, exposure 20min

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NGC 7635 - 10.9.2021 at 22.00 - 10.9.2021 at 22.20 Janakkala, Tervakoski Observation number 101212