NGC 281

About image
This emission nebula is visible in the constellation Cassiopeia and surrounds the open cluster IC 1590.
It is sometimes called the Pacman Nebula because of its resemblance to the famous character of the videogames
The nebula appears furrowed clearly from a dark vein, which crosses it in an east-west direction.
The image was obtained from my urban location with heavy light pollution and in evenings with poor transparency.

Technical data
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 Ha 7nm and OIII 8.5nm, 50.8 unmounted
Guiding system      TSOAG 9mm with Lodestar
Exposure details    Ha 18x900" bin1 -20C
                                      OIII 21x900" bin1 -20C
Total integration    9.8h
Acquisition       Maxim, PHD2
Processing       Maxim, Photoshop CS5
SQM-L        18.5    
Location        Home terrace (Rescaldina, Italy)
Date            23/24 September 2014

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