Grab your telescope and head outside to see one of the finest multiple star systems in the sky, one that's accessible to both northern and southern observers. The five stars of this system, the brightest of which drives the nebulous light show around the famous Horsehead Nebula, are a study in stellar contrasts and a beautiful sight in a small telescope. Here's how to find it (along with a bonus 'triple star' system) and what to look for...