ngc7293-Helix nebula  in the constellation Aquarius is about 700 light-years distance from Earth.
telescope-TS 65mm apo.quadruplet
mount -Skywatcher HEQ5 pro
camera -ccd Atik 314l+color
guide cam.-asi120mmM  and phd2 guiding
guide-scope -Skywatcher 70mm
exposures-10x600 sec UHC filter , 5x900 sec Astronomik HA filter 12nm
location Santorini-(Greece) 29 -oct.-2016.