CPC Deluxe 800 EdgeHDCelestrons top performing altazimuth telescope system, the CPC Deluxe HD is a favorite among experienced amateur astronomers and the preferred telescope of Stephen Hawking 8 inch EdgeHD optical tube provides stunning views and sharp astroimages free of visual defects NexStar+ hand control and internal GPS guides users through the simple SkyAlign setup and features a 40,000+ object database Sturdy dual fork arm mount with upgraded gears and motors