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The STAR BOOK TEN is the most advanced astronomical hand controller available and is recommended for anyone interested in exploring the night sky. The innovative STAR BOOK TEN hand controller offers astronomical navigation with a large full-color High Definition LCD screen! The color screen is a detailed star chart that acts as a navigational and GOTO guide for the mount. STAR BOOK TEN features. Calculate your offset Here.The Advance Unit is now available. Installing the Advance Unit on the STAR BOOK TEN enhances your auto guiding capabilities. This allows you to view an image from a CCD camera, record or play back from an SD card and adjust the shutter exposure controls of a DSLR camera.