M78, IC 434, NGC 2024 - 13.2.2020 at 19.00 Lempäälä Observation number 88177

Visibility Unclassified

Milo Laitala

From here it starts little by little..

Photo compiled from exposures of two nights from 13-14.2.

The yellowness of the picture is due to the street lights, which turn off at midnight when cloud rafts arrive at exactly the same time. Seeing wasn't quite perfect either night, but I think you can create a "tolerable" track with this kind of equipment. Waiting for the weather.

This description has been automatically translated from Finnish. Click here to see the original text.

4 7

Additional information

Observation target
- Deep space object
Designation
- M78, IC 434, NGC 2024
- Luokittelematon

Constellation
- Orion
Nebulae
- Dark nebula
  
  Dark nebulae are dust in space. It obsruct the visibility of background star and bright nebulae. Thus, the dark nebulae are seen as dark clouds in space.
  
  The Horsehead Nebula is a dark nebula. Image Arto Murtovaara.
  
  The dark nebula LDN 1235 in Cepheus. Image Juha Kepsu.
  
  The dark nebula LDN 1302. Image Tero Turunen.
  
  The NGC 1333 is a reflection nebula, which includes also dark nebulae. Image Samuli Vuorinen.
- 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

Nikon D850, iOptron Skyguider pro, Redcat 51/250mm f/4.9, ISO 1250, 74x180s + darks, flats and biases. DSS, PS and LR.

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M78, IC 434, NGC 2024 - 13.2.2020 at 19.00 Lempäälä Observation number 88177