The Celestial Sphere from Latitude 30° South

1700 Hours Sidereal Time

The sky from 30°S at 1700 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 1700 hours sidereal time. It is assumed that the observer is located at approximately 30° latitude south.

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 South

The brightest stars cut through the southern sky from the zenith down to the southwest horizon. Starting with Sagittarius and Scorpius overhead, the trail of bright stars follows the Milky Way down through Lupus, Centaurus, Crux, Vela and Carina. The two bright stars near the 'Southern Cross' are Rigil Kentaurus (the nearest star to the Sun) and Hadar in Centaurus whilst the bright object on the southern horizon is Canopus in Carina. Triangulum Australe is well-placed for viewing high in the south near Rigil Kentaurus and Hadar.

The western sky is devoid of major constellations with only Hydra, Corvus and Crater in attendance. Meanwhile, in the east, Aquarius rises. The bright star in the southeast is Fomalhaut of the constellation Piscis Austrinus.

Looking North

The large zodiacal constellation Virgo is sinking in the west, its brightest star Spica trailing behind. The difficult Libra is nearer to zenith. The bright star very low in the northwest is Arcturus which belongs to the ice cream cone-shaped Boötes.

Moving eastwards, the easily-discernable half-circle of stars low on the horizon next to Boötes is Corona Borealis. Due north is the 'Keystone' asterism of Hercules. Within this asterism is M13, the Great Globular Cluster. The bright object just peaking above the horizon next to Hercules is Vega in the constellation Lyra. The only other bright star in the vicinity is Altair of Aquila.

Above Hercules in the north is the large but faint set of constellations Ophiuchus and Serpens. The most spectacular stars are reserved for the zenith. Scorpius and Sagittarius dominate the sky overhead with bright red Antares nearly at zenith.