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. Use the arrows under the photo to navigating between different versions of the image. 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 Aperture: 4.5 ISO: 800 Mount: Fornax Mounts LighTrack II
Cassiopeia and Cepheus form a celestial royal couple. In Greek mythology, Cepheus was the king of Aethiopia and Cassiopeia, mother of Andromeda, was his wife. Cepheus and Cassiopeia were placed next to each other among the stars, along with Andromeda. Cassiopeia was placed in the sky as a punishment after enraging Poseidon with the boast that her daughter Andromeda was more beautiful than the Nereids or, alternatively, that she herself was more beautiful than the sea nymphs. Delta Cephei is the prototype for the Cepheid class of variable stars, its variation being easily observable with the naked eye. μ Cephei, also known as Herschel’s Garnet Star, is a red supergiant, probably the largest star visible to the naked eye, and one of the largest known. Use the arrows under the photo to navigating between different versions of the image. Unfortunately, I wasn’t able to find the figure used by Hevelius in his famous atlas to add it next to Cassiopeia’s. Date and place: February 26 2017; Kilan, 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 Aperture: 4.5 ISO: 800 Mount: Fornax Mounts LighTrack II
