Celestron CGEM DX Mount and Tripod Computerized Telescope CGEM DX Mount Manual - Page 24

Appendix A - Technical Specifications CGEM DX Mount Hand Control Motor: Type Max Slew Speed Software Precision Hand Control Ports Motor Ports Tracking Rates Tracking Modes Alignment Procedures Database Complete Revised NGC Catalog Complete Messier Catalog Complete IC Catalog Complete Caldwell Abell Galaxies Solar System objects Famous Asterisms Selected CCD Imaging Objects Selected SAO Stars User defined (Sky Objects) User defined (Land Objects) Total Object Database Double line, 16 character Liquid Crystal Display; 19 fiber optic backlit LED buttons DC Servo motors with encoders, both axes 5º/second 24 bit, 0.08 arcsec calculation RS-232 communication port on hand control Aux Port, Autoguide Ports Sidereal, Solar and Lunar EQ North & EQ South 2-Star Align, 1-Star Align, Solar System Align, Quick Align, Last Align 40,000+ objects, 100 user defined programmable objects. Enhanced information on over 200 objects. 7,840 110 5,386 109 2,712 9 20 25 29,500 99 9 45,492 Appendix B - Glossary Of Terms A - Absolute magnitude Airy disk The apparent magnitude that a star would have if it were observed from a standard distance of 10 parsecs, or 32.6 light- years. The absolute magnitude of the Sun is 4.8. at a distance of 10 parsecs, it would just be visible on Earth on a clear moonless night away from surface light. The apparent size of a star's disk produced even by a perfect optical system. Since the star can never be focused perfectly, 84% of Alt-Azimuth Mounting Altitude 22 the light will concentrate into a single disk, and 16 % into a system of surrounding rings. A telescope mounting using two independent rotation axes allowing movement of the instrument in Altitude and Azimuth. In astronomy, the altitude of a celestial object is its Angular Distance above or below the celestial horizon.