IC 2118 - 9.12.2018 at 03.00 Fregenal de la Sierra, Espanja Observation number 80627

Visibility III / V

Tapio Lahtinen, Tampereen Ursa

One of the sites that had long been on the shooting list was then to be carried out with the equipment of the Spanish Remote Observatory.

An interesting object that is said to be either an ancient supernova remnant or a fog illuminated by nearby Rigel.
The object has been nicknamed ‘witch’s head fog’ but I have now chosen such a composition from which the nickname is not so easy to conceive.

Its a big enough item that had to take a 2x1 mosaic.

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

6 13

Additional information

Observation target
- Deep space object
Designation
- IC 2118
- Keskitaso

Constellation
- Eridanus
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

Sky-Watcher Esprit 100ED, 10 Micron GM 1000 HPS, Atik 460EX, 340min L, 400min RGB

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IC 2118 - 9.12.2018 at 03.00 Fregenal de la Sierra, Espanja Observation number 80627