In-depth guides to finding and observing the constellations — covering key stars, mythology, deep-sky objects, and step-by-step tips for first-time observers and experienced stargazers alike.
Each constellation guide on WatchTheStars is written to work at two levels. The first half is designed for complete beginners — how to actually find the constellation on a clear night, what to look for with the naked eye, and a step-by-step observing sequence that makes sense whether you've never looked up at the stars before or you just want a refresher.
The second half goes deeper: key individual stars with their spectral types and distances, mythology from multiple world cultures, every notable deep-sky object in the constellation with difficulty ratings, and an advanced section covering astrophotography targets, telescope challenges, and variable star observation. Each guide also includes original inline diagrams so you don't need to find a separate star atlas.
Click any constellation to open the full guide.
The most recognisable constellation in the night sky. Betelgeuse, Rigel, three Belt stars, the Orion Nebula visible with the naked eye, the Horsehead Nebula, and some of the richest deep-sky territory in the heavens.
Home of the Plough — the most-recognised star pattern in the UK sky. Seven bright stars point the way to Polaris, and the constellation holds seven Messier objects including galaxies M81 and M82.
The most dramatic summer constellation — low in the south from the UK but unmistakable. Red supergiant Antares glows like a hot coal, flanked by globular clusters and the richest Milky Way star fields.
The unmistakable W (or M) shape circumpolar from the UK. Sitting in the Milky Way, it is packed with open clusters including Caroline's Rose and the ET Cluster — and was the site of Tycho Brahe's famous 1572 supernova.
The lion of the spring zodiac, with Regulus anchoring the famous Sickle asterism. Leo holds the remarkable Leo Triplet — three interacting galaxies in one eyepiece view — plus the golden double star Algieba and the annual Leonid meteor shower.
The constellations visible on a given night depend on the time of year. Here's a rough guide to what dominates the sky from the UK each season.
Orion, Gemini, Taurus, Auriga, Canis Major — the richest bright-star sky of the year
Leo, Virgo, Boötes — galaxy season, with Arcturus and Spica guiding the way
Scorpius (low south), Cygnus, Lyra, Aquila — the Summer Triangle and the heart of the Milky Way
Andromeda, Pegasus, Perseus, Cassiopeia — the Andromeda Galaxy at its highest