Starwatch: get to know the Great Diamond asterism

Composed of four of the brightest stars, the asterism is great for finding your way around the night sky

Beyond the traditional constellations, asterisms can provide a useful alternative way to find your way around the night sky. This week we take a look at one that spans four northern spring constellations.

The chart shows the view looking south-west from London at about 23.00 BST this week.