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Ursa Astronomical Association
Kopernikuksentie 1
00130 Helsinki

Ursa Astronomical Association

IC 434 - 4.2.2021 at 23.00 Kirkkonummi, Komakallio Observation number 96517

Visibility I / V

With clear weather, I photographed this subject in short snippets from November to February. The picture is a mosaic composed of two parts.

You can often see broadband images taken in natural colors from this subject, but I wanted to see what the subject would look like with narrowband filters. The colors in the image follow the Hubble palette, i.e. the red channel in the image contains S-II or sulfur, the green channel H-alpha or hydrogen and the blue channel O-III or oxygen.

The second image also shows a starless version of the view.

More similar observations
Additional information
  • Observation target
    • Deep space object
  • Designation
    • IC 434
  • Constellation
    • Orion
  • Nebulae
    • Emission nebula info

      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.

    • Dark nebula info

      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.

Technical information

Sky-Watcher Esprit 100ED, Atik 460EX, Astrodon 5 nm narrowband filters, iOptron CEM60 stand. Exposure for a total of 12 hours in 10 minute increments.

Comments: 8 pcs
Jari Luomanen - 6.3.2021 at 09.46 Report this

Mahtavaa laatua ja voimakas kolmiulotteisuuden tuntu näissä. 

Mikko Ankelo - 6.3.2021 at 10.18 Report this

Todella upeat kuvat!

Samuli Vuorinen - 6.3.2021 at 13.12 Report this

Kiitosta vaan!

Markku Ruonala - 6.3.2021 at 16.48 Report this

On kyllä hieno.

Janne Laukkanen - 6.3.2021 at 19.26 Report this

 Vaikuttaisi siltä, että omissa taidoissa lienee vielä kehittämisen varaa...

Mikko Peussa - 6.3.2021 at 19.36 Report this

On kyllä upea valo näissä. Hienot kuvat!

Jani Päiväniemi - 8.3.2021 at 18.35 Report this

Uskomatonta! On upeat kuvat!

Satu Juvonen - 8.3.2021 at 20.46 Report this

Onpa upea! 

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