About image
M 38 (left in the image) and NGC 1907 (right) are a pair of open clusters in the Auriga constellation.
M 38 is about 4200 light years from Earth, while NGC 1907 is slightly further away (4500 light years)

Technical data
Optic          Tecnosky Apo Refractor 115 - 800mm f/6.9
Mount        10Micron GM1000 HPS
Camera         Atik 4000 with Starlight external filter wheel 5 positions
Filters         Baader RGB 50.8 unmounted
Guiding system    OAG Starlight Xpress with Lodestar
Exposure details  R 5x300" bin1 -20C
             G 5x300" bin1 -20C
                                    B 5x300" bin1 -20C
Total integration  1.2h
Acquisition      Maxim, PHD2
Processing      Maxim DL, Photoshop CS5
SQM-L       21.25    
Location       Cegni (Pavia, Italy)
Date          15 November 2015