About image
NGC 7129 is an observable H II region in the Cepheus constellation; it is one of the most remote structures of the Cepheus molecular nebulous complex, of which it is part.
NGC 7142, in the upper part of the image, is an open cluster of 6,200 light-years away and probably obscuered by interstellar clouds.
I had some technical problems with my equipment shooting this image, so the RGB integration unfortunately was not optimal.

Technical data
Optic            Tecnosky Apo Refractor 115 - 800mm f/6.9
Mount          10Micron GM1000 HPS
Camera           Atik 4000 with Starlight Xpress external filter wheel 5 positions
Filters        Baader LRGB 50.8 unmounted
Guiding system      Starlight Xpress OAG with Lodestar
Exposure details    L 23x600" bin1 -20C
                                      R 6x420" bin2 -20C
                                      G 5x420" bin2 -20C
                                      B 4x420" bin2 -20C
Total integration    5.6h
Acquisition        Maxim, PHD2
Processing        Pixinsight 1.8, Photoshop CS5
SQM-L          21.27    
Location         Porliod (Aosta Valley, Italy), Pian dell'Arma' (Pavia, Italy)
Date            6/7 August 2016