the northern hemisphere
The December constellations swing into view, offering an impressive array of targets to enjoy
Aries holds many double stars that can be split
If you’re a fan of splitting double stars with your telescope then head over to the constellation of Aries (the Ram), which makes its appearance this month, bounded by the star patterns of Taurus (the Bull), Pisces (the Fishes) and Cetus (the Whale). In particular, binary star systems Lambda Arietis, Epsilon Arietis and Mesarthim are splendid targets to resolve for astronomers with medium- to large-sized telescopes. Meanwhile orange giants Hamal (the Head of the Ram) and Botein (Little Belly) can be picked out using nothing more than the naked eye.
Orion (the Hunter) is also prominent, featuring red supergiant
Betelgeuse, De Mairan’s Nebula (M43) and the Orion Nebula (M42).
Observer’s note:The night sky as it appears on 16 December 2018 at approximately 10pm (GMT).