CED214 & NGC7822

Image information:

Date: 10/02/2011
Equipment: SBIG ST2000XM with CFW10 using 5nm Astrodon Ha filter and Astrodon I series Gen II RGB filter set Tamron SP AF 180mm f/3.5 Di LD IF Macro telephoto lens on Losmandy GM8 mount. Lens was working at f3.5.
Image type: Ha(Ha+R)GB
Exposure time: 8X8min Ha binned 1X1, RG&B 8X8min each binned 1X1

Object information:

Object designations:

  • NGC7822 (upper, arc-shaped part of the nebula);
  • CED214, Sh2-171 (lower, rectangular part of the nebula);
Object type:
Diffuse emission nebula
Object size:
Constellation: Cepheus
Cederbald 214 and NGC7822 nebulae are part of a great molecular cloud situated towards the constellation of Cepheus. With the diameter of some 200 ly it is one of the largest molecular clouds in our galaxy. In the cloud there are many hot young stars, grouped in several clusters. They are responsible for ionization of gas and emitting light in the emission part of the cloud. Colder, non ionized parts of the cloud act as a dark absorption nebula. Dark nebula creates interesting shapes visible on the image. Thinner parts of the dark nebula do not obscure the light of the stars behind them completely, but make it instead more red in color. CED214/NGC7822 cloud is some 2800 ly distant.

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