Nikon D7000 (modified), Samyang 135/2 @ f2, EQ-5,
12 x 16min @ ISO280
It's one of the darkest spot visible by naked eye at the border of Cygnus and Cepheus constellations, on the Milky Way background.
~50% crop from the initial APS-C frame.
Taken at Maydanak observatory, Oct 6-7, 2016.