Farmakopoulos Antonis
http://astrofarma.gr/
NGC 891 is an spiral galaxy in the constellation Andromeda. The distance from Earth it’s about 30 million light-years away. The galaxy is a member of our local group of galaxies.
Some Technical detail :
Location Mauna
Keratea Obs near Athens Greece
Telescope GSO RC10" Ritchey Cretien 2000mm f8
Mount Sky Watcher EQ6 Pro
Camera QHY9 KAF 8300 mono CCD, Temp -25 C
Filters / Exposure time
Lum 25x600 sec bin 2x, RGB 12x300 sec bin 2x
Total Exposure time 7,2 ~ hours in 2 nights
Software Nebulosity 2, Deep Sky Stacker, PixInsight, Photoshop CS5