"The Meade 10"" (254mm) f/10 LX200-ACF Advanced Coma-Free Telescope includes all the field-proven features of the LX200 including GPS, Primary Mirror Lock, Oversized Primary Mirror, SmartDrive; Smart Mount, AutoStar II. It features a radical new Advanced Coma Free design optical system.The ACF design produces a coma-free, flat field of view that is the perfect platform for the demanding researcher and imaging enthusiast. Meade Ultra-High Transmission Coatings (UHTC) Increased total light transmission and image brightness by nearly 20% over Meade's standard coatings. Objects such as stars, galaxies and nebulae will appear significantly brighter.|f/10 Advanced Coma-Free Opticial system.|Meade Ultra-High Transmission Coatings (UHTC) increases total light transmission and image brightness by nearly 20% over Meade's standard coatings. Objects such as stars, galaxies and nebulae will appear significantly brighter|Zero Image-Shift focuser allows you to obtain precise image focus with no image movement|Oversize Primary Mirror diameters are greater than their listed aperture. This additional 1/4"" yields a wide, fully illuminated field-of-view|Primary Mirror Lock locks the mirror in place preventing movement during long-exposure astrophotography|Smart Drive provides permanent periodic error correction (PPEC) on both axes by learning and averaging error over the course of one or more training periods, thereby minimizing guiding corrections during long-exposure photographs|SonyGPS Receiver Sensor automatically inputs precise time, date and geographical location to help quickly and precisely align the telescope|AutoAlign - Telescopes with Meade's new AutoAlign are smart scopes that know the night sky right out of the box. AutoAlign picks two alignment stars for you and places them right in your view-finder|AutoStar II controller features ""Hot Keys"" for quick access to a 145,000 celestial object database"