Sh2-150, VdB 154 - emission and reflection nebulae in Cepheus

  Size: 2000 px      
© Velimir Popov & Emil Ivanov 2017

Sh2-145 is an extensive emission nebula in the constellation Cepheus. This is a great nebula of heterogeneous appearance, and divided into several sections. It is located at the distance of about 900 parsecs (2900 light-years) in the direction of stellar associations Cepheus OB2 and Cepheus OB3 and perhaps linked to the expanding super-Cepheus Bubble. Nearby is the star recognized responsible for its ionization: HD 213023. Visually near to Sh2-150 is the reflection nebula VdB 154. Its distance is not yet known, therefore is not possible to claim that there is a physical link between both nebulae. Some dark clouds also can be seen on the image (see the annotated mouseover).

Image details:


Center of field RA 22:31:53 (h:m:s)
Center of field DE +65:17:50 (deg:m:s)
Size 1.6 x 1.05 (deg)
Pixel scale: 2.99 (arcsec/pixel)
Orientation: Up is 101 degrees E of N
Charts and image details obtained from
Optic(s): ASA 12" Astrograph @ f/3.6 (Newton)
Mount: ASA DDM85 Standard
Camera: SBIG STL 11000 M
Filters: Luminance, Red, Green, Blue, Astronomik filters
Dates/Times: 27, 28. Jan. 2017
Location: IRIDA Observatory, BG, longitude: E 24 44' 18", latitude: N 41 41' 42"
Exp. Details: R:8x10 min, G:8x10 min, B:8x10 min, Bin 2, Total Exposure Time - 240 min. (4:00 h)
More details: Dark and flat frames reduction
Processing: PixInsight / PS
Copyright: Velimir Popov and Emil Ivanov 2013 - 2017. All Rights Reserved
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