other constellations from the Plough (Ursa Major, the Big Dipper) (more details ) Bright Stars : Achernar , Aldebaran , Algol , Alpha Cen , Altair , Arcturus , Betelgeuse , Canopus , Capella , Castor , Deneb , Pollux , Procyon , Regulus , Rigel , Sirius , Spica .