Note also a beautiful field about the variable S, and a cluster about midway between α and β.
Two stars about 7° apart in the tail of the Unicorn are pointer stars to Procyon. These stars are known as 30 and 31. The former is about 16° east of Procyon, and is easily identified as it has a sixth-magnitude star on either side of it. About 4° southwest of this star a good field-glass will reveal a beautiful star cluster.
ERIDANUS (ē-rid´-a-nus)—OR THE RIVER PO. (Face Southwest.)
Location.—Three degrees north and 2° west of Rigel, in Orion, lies β Eridani, the source of the River. Thence it flows west till it reaches π Ceti, then drops south 5°, thence east southeast, its total length being about 130°.
The great curve the River takes, just east of the Whale, resembles a horseshoe.
Acherna, the first-magnitude star in Eridanus, is too far south to be seen in this latitude.
Note the pretty star group around β and a pair of stars of an orange hue below ν.