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Sharpless 132    

Sharpless 132 is an emission nebula located within the stream of the Milky Way in the constellation Cepheus. It lies in the Perseus arm of our galaxy at a distance of around 10,000 to 12,000 LY. Sharpless 132 is part of a large emission nebula structure spanning around 250 LY. Visually, it covers an area of around 20 × 35 arc-min but has a low surface brightness, making it difficult to observe against the backdrop of Milky Way stars.
The small knot of stars along the upper right edge of the image (immediately above the bright orange star HD 212466) is Berkeley 94. This small open cluster contains around a dozen member stars and lies at a distance of around 5220 LY. It has a visual magnitude of 8.7 and is around 3 arc-min in diameter. HD 212466 is a variable star (= RW Cephei) with an average magnitude of 6.44. It is a Class K supergiant lying at a distance of 4077 LY, thus making it a foreground object to the nebula.

Date(s) Acquired: 12 November 2015
Telescope: Orion 120mm EON Apochromatic Refractor
Camera: QSI Model 583

 

   Exposure Time (min) 
   Number of Exposures
   RGB
   1.5
   Hα
   15
   Hβ
   -
   OIII
   -
   RGB
   11
   Hα
   6
   Hβ
   0
   OIII
   0

 

Processing:
Master red, green, blue and Hα images created using SuperSIAM.
Hybrid master red image created using Basic Processing Procedure II.
Color composite image created using Basic Processing Procedure III.
Color composite image contrast-stretched using Adobe Photoshop.




 

 

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