The mount is of the altazimuth kind. Typical current applications of altazimuth mounts include the following. It is supported by an altazimuth mount. Each Keck Observatory telescope sits on an altazimuth mount. The image shows a mirror that rotates on a computer-controlled, motor-driven altazimuth mount. Clock-driven equatorial platforms are sometimes used in non-tracking type mounts, such as altazimuth mounts. This instrument had an altazimuth mount with a sighting telescope. With an altazimuth mount, those directions are rotated by the amount of the parallactic angle. More recent large telescopes have instead adopted the more compact and mechanically stable altazimuth mount. They use an altazimuth mount, instead of a meridian circle, fitted with leveling screws.