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.
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
Location Porliod (Aosta Valley, Italy), Pian dell'Arma' (Pavia, Italy)
Date 6/7 August 2016