The Cup
Crater
Brightest star: Labrum
Overview
Crater is a relatively faint constellation covering about 282 square degrees on the southern sky, perched on the back of the great constellation Hydra. Its brightest star, Labrum (Delta Crateris), shines at only magnitude 3.6, making the entire constellation somewhat challenging to identify from light-polluted locations. Despite its visual obscurity, Crater is one of the original 48 Ptolemaic constellations and has been recognized since antiquity. Its stars form a cup or goblet shape when connected, sitting between Corvus to the east and the body of Hydra beneath it. The constellation lies well south of the ecliptic and away from the Milky Way. Best viewing is during March through May.
Mythology
Crater represents the cup that Apollo gave to his crow to fetch water from a sacred spring. In the myth, the crow delayed its mission, distracted by a fig tree, and then lied about the reason for its tardiness. Apollo punished all three, placing the crow (Corvus), the cup (Crater), and the water snake (Hydra) in the sky, with the crow eternally unable to reach the cup to drink. In another tradition, the cup was the mixing bowl of Dionysus, the god of wine, or the cup used by the Olympian gods during their feasts. Some scholars connect Crater to the Cup of Communion, a vessel of shared sustenance and divine grace, predating even Greek civilization.
Astrological Significance
Crater symbolizes the vessel that holds what nourishes us, whether physical, emotional, or spiritual. In esoteric astrology, the cup represents the capacity to receive and hold divine wisdom, grace, and abundance. Its placement just out of the crow's reach in the celestial narrative adds meaning about the difference between coveting something and being worthy to receive it. The cup archetype appears throughout spiritual traditions as the Holy Grail, the chalice, and the sacred vessel of transformation. Those who resonate with Crater may be learning about receptivity, gratitude, and the proper relationship between desire and fulfillment. The cup also represents emotional containment and the ability to hold space for others.
Observing Tips
Crater is best observed during April and May from the Northern Hemisphere and March through June from the Southern Hemisphere. To find it, look between the bright star Spica in Virgo and the star Alphard in Hydra. The cup shape requires dark skies and some imagination to trace. Crater contains relatively few notable deep-sky objects, though the galaxy NGC 3511 and the Crater 2 dwarf galaxy (a satellite of the Milky Way discovered in 2016) are of astronomical interest. The neighboring constellation Corvus with its brighter stars can serve as a stepping stone to finding Crater. Binoculars help to identify the fainter stars that complete the cup outline.