M51-Whirlpool Galaxy, taken during 6 consecutive nights between 4 May and 9 May 2018
M51 is an interacting grand-design spiral galaxy. It lies in the constellation Canes Venatici, and was the first galaxy to be classified as a spiral galaxy. Its distance is approx 35 million light-years from the Earth.

Technical info: 
TS 80mm f6 APO triplet refractor - Canon 40D - IDAS Light Pollution Filter LP2
Exposure: 160x 6min - (total 16 hours)