The Celestial Sphere from Latitude 30° South

0900 Hours Sidereal Time

The sky from 30°S at 0900 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 0900 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

Eridanus is sliding toward the western horizon. This constellation is so large that it really dominates the western sky. Its brightest star, Achernar, falls toward the horizon. Pavo takes its position on the southern horizon but Triangulum Australe, a little further to the east, may be easier to find. Just appearing in the southeast is the faint zodiacal constellation Libra.

Above Libra lies Centaurus which contains Rigil Kentaurus, the closest star to the Sun. The other bright star near Rigil Kentaurus is called Hadar. Tucked in close by is the 'Southern Cross', Crux.

The great ship 'Argo', now divided into four pieces, sails across the sky near zenith. The brightest star in the original constellation is Canopus, now part of Carina, the keel of the ship. Canopus is the third brightest star in the sky after the Sun and Sirius. Unlike Sirius, however, Canopus is very distant.

Looking North

Spica leads Virgo up in the east. Leo has moved around to the north and is better placed for viewing. The sky above Leo is unexceptional though, populated only by the lengthy Hydra.

The twins Castor and Pollux of Gemini are slipping ever westward. Above this constellation lies the tiny Canis Minor with its 'dog star' Procyon. Approximately midway between Procyon and Canopus is the true 'Dog Star', Sirius, in Canis Major.

In the northwest, Orion is preparing to set. Orion is one of the few constellations that can lay claim to more than one first magnitude star. Betelgeuse and Rigel are located in opposite corners of this hourglass-shaped figure and appear slightly different in colour as well. This is not an optical illusion as Betelgeuse really is a cool, red star and Rigel is hot and blue.

Taurus is fast disappearing, as is Auriga, in the northeast.