Sh2-155 is an emission nebula in the constellation of Cefeo, also called Cave Nebula.
The nebula appears as a heterogeneous set of bright and dark nebula parts; the distance of the entire complex from the Solar System is estimated at 2400 light years.
Optic Tecnosky Apo Refractor 115 - 800mm f/6.9
Mount Losmandy G11 with Ovision worm and FS2
Camera Atik 4000 with Starlight Xpress filter wheel 5 positions
Filters Baader LRGB 50.8 unmounted
Guiding system TSOAG 9mm with Lodestar
Exposure details L 23x480" bin1 -15C
R 6x300" bin2 -15C
G 6x300" bin2 -15C
B 6x300" bin2 -15C
Total integration 4.6h
Acquisition Maxim, PHD2
Processing Maxim, Photoshop CS5
Location Cegni (Pavia, Italy)
Date 9 August 2013