Weak emission nebula in the constellation of Cepheus.
Sh2-150 is a fairly extensive H II region oriented north-south east of 26 Cephei.
|Date of exposures:||09.10.2018, 10.10.2018, 11.10.2018, 12.10.2018, 13.10.2018|
|Exposures:||CLS CCD: 102 x 300", Ha 5nm: 16 x 300", RGB: 219 x 300", Sum: 28,1 hrs.|
|Telescope:||10'', F4 Newton|
|Focal length:||1000 mm|
|Filter:||Astrodon RGB E-Series, Astrodon Ha, 5nm, Astronomik CCD CLS|
|Camera:||ASI 1600 MMC Pro|
|Guiding:||Off Axis Guider, Lodestar|
Sh2-150 is located at a distance of about 900 parsecs (over 2,900 light years), next to the nearby Sh2-145 nebula, and appears in the direction of the stellar associations Cepheus OB2 and Cepheus OB3 and may be associated with the expanding superbubble "Cepheus Bubble". Two blue stars would be responsible for its ionization: HD 213087 has the spectral class B0.5Ib and is therefore a blue supergiant, while HD 213405 of the class B0.5V is a main sequence star.
Sh2-150 is so weak that it takes a lot of exposure time to capture a good clean image of the region. I exposed a lot in pure RGB, because there are some nice reflection nebulae in the area I wanted to show.
Since I exposed with my two telescopes at the same time, I took another picture with the Epsilon 130 in a larger field, which otherwise has the same exposure data.