The Celestial Sphere from Latitude 45° North

1500 Hours Sidereal Time

The sky from 45°N at 1500 hours sidereal time

This page contains a description of the stars, constellations, and deep-sky objects that can be seen in the sky at around 1500 hours sidereal time. It is assumed that the observer is located at approximately 45° latitude north.

To use the sky map, orient it so that the direction you are facing is at the bottom of the map. Zenith, the point directly overhead in the sky, is located at the centre of the map.

Looking North

The asterism of the 'Big Dipper' or 'Plough' is clearly visible hanging downward high in the northwest. This famous northern hemisphere object is actually a part of the much larger constellation Ursa Major. The two stars at the end of the bowl of the 'Big Dipper' point almost directly to Polaris in Ursa Minor. Currently, Polaris lies within 1° of the north celestial pole, providing a convenient navigational aid. Skimming the northern horizon is Cassiopeia.

Capella, in Auriga, is the bright star very low in the north, directly below Ursa Major. Castor and Pollux, the Gemini twins, are setting in the northwest.

In the northeast, the bright stars of summer are getting ever higher in the sky. The 'Summer Triangle' of Deneb (in Cygnus), Vega (in Lyra) and Altair (in Aquila) are rising up. The 'lozenge' head of Draco is eyeing Vega and high overhead is the constellation of Hercules.

Looking South

Aquila is just rising in the east. Ahead of it is Hercules near zenith. Hercules contains a naked-eye globular cluster M13 within its 'Keystone'. Below Hercules is the large although unexceptional constellation Ophiuchus. The zodiacal constellation Scorpius is crawling along the southern horizon. Observers who are not too far north can see Antares, the bright red heart of the scorpion.

Near zenith can be found the semi-circular Corona Borealis and the kite-shaped Boötes with Arcturus at its base. The bright star below Arcturus is Spica in Virgo. Leo is setting in the west with Regulus marking the bottom of the 'Sickle'.