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Jedi2014

Sh2-150 in Cepheus

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Hello,

Sh2-150 is a fairly extensive H II region oriented north-south east of 26 Cephei. It 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. Camera was an ASI 1600 MMC.

Details: http://www.spaceimages.de/en/astrophotos/nebula/sh2-150

or https://www.astrobin.com/371753/

sh2150halrgbmediumnewt.jpg

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. Camera here was an Atik 490 Exm.

sh2150lrgbmedium1.jpg

 

Cheers
Jens

 

Edited by Jedi2014
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Great pair of images Jens.
The CMOS most certainly shows the advantage of the larger sensor working @ 0.78 arcsec/pixel, very smooth.

Peter

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