The long cold nights of the Northern Hemisphere winter months are populated with some of the finest constellations in the sky. During the months of December, January and February many celestial gems are visible in the evening sky. They include spectacular open clusters, stunning nebulae as well as numerous bright stars. Below is a list of five of the best open clusters visible at this time of year; all of which can be spotted with the naked eye and each one a superb binocular object.