to July Sky School
To start finding this month's featured constellations, find the Big Dipper.
Perhaps the easiest shape to pick out is the Northern Crown, Corona Borealis, with its nice little arc of stars centred on Alphecca, also known as Gemma, the gem of the crown. To find it, run off the end of the Big Dipper's handle, toward the south-eastern horizon, by about the length of the handle.
From there you can find Bootes, the Herdsman, sitting between the Crown and the Big Dipper's handle. The brightest star in Bootes, yellow-coloured Arcturus, is easy to find. It is the fourth-brightest star in the sky, and certainly the brightest in a large area of sky south-east from the tip of the handle. Once you have found Arcturus, which marks Bootes' hip, you can follow the rest of Bootes' body and head.
On the other side of the Crown, to the East, find Hercules. It can be hard to trace Hercules. Like the Greek hero it's named for, Hercules is large and rather dim. As well, the line across his throat out along his arm is similar in shape to the line across the tip of his club and along the top of his head. Use the Crown's curve to get oriented. Note that there is a small 'extra' star on the corner of Hercules' rectangular head opposite the Crown.
Lead across Hercules toward the eastern horizon and find the sky's fifth-brightest star, Vega in the Lyre. Interestingly, the Earth's toy-top wobble that causes the Sun to drift through the seasons, also makes Earth's pole wander among the stars on a vast, slow circle. In a mere 12,000 years, Vega will be the pole star.
The Lyre is, of course, the lyre of Orpheus, son of sun-god Apollo and the muse Calliope. Orpheus played so well that the trees and rocks would weep. When his wife, Eurydice, died and travelled to the underworld, Orpheus went there and charmed Pluto and Persephone with his music, so that they agreed to let her go back to her life on Earth. There was a condition, though (there always is): he was not to look back at her until they reached the surface. Well, he did, so she had to go back down. He came to a gory end some years later when the Thracian women, whom he avoided after his wife's death, tore him apart. On the bright side, he then got to go to the underworld and be with Eurydice, and Zeus tossed his lyre into the stars.
"If a model of M13 were constructed using grains of sand to represent its million stars with an overall diameter of three hundred miles, then the average distance between the grains would be three miles! Even at the centre the grains would be nearly a mile apart." (Brent Watson "Finder Charts for Bright Telescopic Objects" (c) 1995)