IC 434 - 1.1.2023 at 19.37 - 1.1.2023 at 20.20 Janakkala, Tervakoski Observation number 111327

Visibility III / V

Petri Kuossari, Riihimäen tähtit. yhdistys

The purpose of the second CovalENS 1.6° x 1.9° panoramic space object on New Year's Day was to test what can be done in half an hour, but this stretched to 36 minutes. Yes, even with such a short exposure, the subject can be distinguished. I have to test a longer exposure during the winter.

First image DeNoise processing. Second picture, original, unprocessed. Third without stars.

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Additional information

Observation target
- Deep space object
Designation
- IC 434
Constellation
- Orion
Darkness
- Average

Seeing
- Good
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.

Technical information

Vaonis Vespera

218mages

Observation duration 36 min

Exposure 10 p

Gain 20 db

Dual Band Filter

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IC 434 - 1.1.2023 at 19.37 - 1.1.2023 at 20.20 Janakkala, Tervakoski Observation number 111327