Meade DSX-90 Series Altazimuth Maksutov-Cassegrain Telescope (similar to ETX-90)

Meade Maksutov-Cassegrain TelescopeModel DSX-90AT 90mm Aperture; Focal Length: 1250mm; f/13.8Calculated Optical Powers: 48x Eyepiece Diameter 1.25″Maximum recommended magnification under good observing conditions: 325x The Meade DSX-90AT telescope is a high-performance altazimuth Maksutov-Cassegrain suitable for a lifetime of serious astronomical study. The 30,000-object Autostar computer directs the delescope automatically to easily locate hundreds of objects in the sky. The rings of Saturn, cloud belts of Jupiter, Moon craters, and deep-space galaxies and nebulae are only the beginning of what can be observed with this telescope. You Chose. It Points. Yo look.The Autostar computer helps you align the telescope to the sky.Choose what you want to observe.Autostar automatically moves the telescope to the object.You found it! The computer tells you about the object. Object Database:5,386 objects from the Index Catalog (IC); galaxies, nebulae, and star clusters of all types; the complete Index Catalog7,840 ojbects from th New General Catalog (NGC); additional galaxies, nebulae, and star clusters of all types; the complete New General Catalog109 objects from the Caldwell Catalog of the best objects for small telescopess110 Messier (M) objevcts; the complete Messier catalog16,800 stars from the Smithsonian Astrophysical Observatory (SAO) catalog; including double stars, variable stars, and other stars of speial note50 Earth-orbiting satellites26 asteroids, including all ht the brightest asteroids15 periodic comets8 major planets from Mercury to Pluto SpecificationsOptical design: Maksutov-CassegrainOptical diameter: 90mm (3.5″)Focal length: 1250mmFocal ratio (photographic speed): 4/13.8Resolving power: 1.3 arc secsLimiting visual stellar magnitude (approx.) 11.7Optical tube dimensions (dia. x length): 4.1″ x 11″Eyepiece barrel diameter: 1.35″Telescope mounting: altazimuthBatteries 8 x AA (user supplied)Battery life (approx.): with Autostar: 20 hrsTripod and accessory tray: included#497 Autostar Computer Control System: included