M31 - Andromeda Galaxy

Location: Alexandroupoli Greece 8-9 of August 2016
Lens: Pentax SMC 135mm 6x7/ F5.6
Camera: ATIK 314L+ Mono @ 0C
Filter Wheel: Starlight Express 7x1.25
Filters: Baader Red (45x2min), Baader Green (45x2min), Baader Blue (45x2min) Total Exposure 4,5 Hours
Mount : EQ6 Pro
Guiding : Finder 50mm with QHY5L-II colour
Calibration Frames:BIAS (30), DARK (30), FLATS (30)
Capture : Nebulosity, PHD Guiding 
Processing :DSS, Pixinsight, Photoshop.