NGC 1909 - 10.3.2023 at 20.00 - 10.3.2023 at 21.20 Janakkala, Tervakoski Observation number 113290

Visibility II / V

Kuossari Petri, Riihimäen tähtit. yhdistys

Maybe I chose the wrong night to photograph the witch's head fog, when nothing else cleared, there seemed to be ice fog on the horizon. Of course, the exposure could have been more than an hour and a quarter. I adjusted the tone a little for the first picture

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Additional information

Observation target
- Deep space object
Designation
- NGC 1909
Constellation
- Eridanus
Darkness
- Good

Seeing
- Average
Nebulae
- Reflection nebula
  
  Reflection nebula is gas only lit up by nearby stars. It should not be mix up with emission nebula, where hot stars nearby cause the gas glow. But then reflection nebulae are visible in the same areas with emission nebulae. The appearance of reflection nebulae is irregular, and many of them need bigger instruments to be visible.
  
  Reflection nebulae are glowing blue around the stars of Pleyades. Image Juha Parvio.
  
  The blue glowing reflection nebula NGC 1333 around the bright star is in Perseus. Image Timo Inkinen.
  
  The bluish reflection nebula NGC 2023 is located lower left from the Horsehead Nebula. The Horsehead Nebula itself is a dark nebula in the front of red emission nebula IC 434. In the left side there is NGC 2024 aka Flame Nebula. Image Samuli Vuorinen.
  
  NGC 7538 in Cepheus is a combination of reflection and emission nebula. Image Timo Inkinen.
  
  Rflection nebulae (LBN 550, 552 and 555) and dark nebulae (LDN 1228) in Cepheus. Image Juha Kepsu.
  
  Reclection nebula vdB 141 in Cepheus. Image Tero Turunen.

Technical information

Vaonis Vespera

461 images

Observation duration 1 h 16 min

Exposure 10s

Gain 20db

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NGC 1909 - 10.3.2023 at 20.00 - 10.3.2023 at 21.20 Janakkala, Tervakoski Observation number 113290