An azimuthal mount is a type of mount that allows the telescope or binoculars to move in the horizontal (azimuthal) and vertical (altitudinal) directions. This system is simple and intuitive for basic observing because it allows easy adjustment of the direction and position of an object in the sky. The azimuthal mount is usually easier to use, but is not ideal for viewing objects that move across the sky, such as stars and planets, because the rotation of the Earth is not compensated for.