Leo is the bringer of Spring, arriving in mid-February and, although not as prominent as Winter's Orion, is nevertheless a dominant constellation with a recognisable asterism.
The most prominent star, Regulus, forms a triangle with Procyon and Alphard (alpha Hydrae): Regulus.
For binocular study Leo has a number of interesting objects: binaries, variables, and deep sky objects. Start with Regulus, which is a binocular double.
Visit other constellations:
Or go to the