ngc 891-unbarred spiral galaxy about 30million light years in the constellation andromeda discovered by William Herschel in1784.
telescope-Astrotech R.C.6 inch. f/9 ,focal reducer Astro-physics CCD67 067x
mount-Skywatcher HEQ5 pro
camera- ccd Atik314L+ color
guide camera ZWO asi 120mmM with phd2 guiding
guid-scope-Skywatcher 70mm
exposures-7x600 sec.UHC filter
image crop.
Location -Sandorini (Greece) 17-9 2016.
the sky not very good- 60 %