Ausschnitt im Sternbild


HII-Emission nebula in Cepheus

Sh2-140 is an HII emission nebula at the edge of the Lynds dark nebula 1204 and is also part of the Cepheus ring, the expanding envelope of gas and dust surrounding the area around Cep OB2.

Please click on the image for a bigger view.
Object: Sh2-140
Date of exposures: 03.05.2018, 04.05.2018, 05.05.2018
Distance: 2.900 Lightyears
Exposures: Ha 5nm: 49 x 180", Luminance: 9 x 180", RGB: 162 x 180", Sum: 11 hrs.
Telescope: 10'', F4 Newton
Focal length: 1000mm
Filter: Astrodon LRGB E-Series, H-Alpha 5nm
Camera: ASI 1600 MMC Pro
Guiding: Off Axis Guider, Lodestar
Mount: EQ8

The bright edge is formed by the B0.5 V double star HD 211880, which ionizes a Bok sphere in the southwest of the LDN 1204 molecule cloud (appears as a dark region against the background of the emission nebula). Invisible in this image are about fifty young stars deeply embedded in the dark gas of LDN 1204 in the lower right corner of the image.