Andromeda galaxy-Messier 31(center region)-is2,5 million light- years from Earth .
Astrophoto with :RC  6 inches telescope f/9 ,mount Skywatcher heq5pro,cam.foto Atik314l+color ccd,filter Luminance  Astronomik filter,guide-cam.Zwo ASI 120mm monochrome.guide-scope Skywatcher70/500 ,exposures 8x600 sec.

location Santorini -Greece 19 august 2017.