Whirlpool Galaxy M51

An 18 minutes exposure of the Whirlpool Galaxy or Messier M51 located in the constellation Canes Venatici. This distance is about 23million light years.
The picture was taken with Nikon D7500 on TAL200K f/8.5. Deepskystacker is used to stack the pictures including darks. Final editing with CS4. No moon and temperature -1°C.