Skywatcher 90/900 AZ3 Refractor TelescopeThe Sky Watcher 90 900 Refractor telescope is a two element, air spaced, fully multi coated objective, achromatic refractor. It allows you to view detailed vistas of star fields, clusters, nebulae, planets and other celestial bodies. It makes a fine terrestrial telescope when mounted on an alt azimuth mount. All SkyWatcher telescopes are backed by a 5 year Australian warranty. Premium Astronomy and Terrestrial Observation Sky Watcher 90 900 refractor