Perseus is one of my favourite constellations in the sky. I will never forget my first nights observing Algol, beta Persei, one of the most famous variable stars in the sky.
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Date and place: November 26 2016; Reine, Norway
Camera: Canon EOS 5D Mark III
Lens: Canon EF 17-40mm f/4L at 40mm with a Kenko Softon diffusing filter
Exposure: 6 x 180s
Mount: Fornax Mounts LighTrack II