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Meade ETX-90EC Meade Instruments Corporation, OAK CANYON, IRVINE, CALIFORNIA 92618-5200 U.S.A

Models: ETX-90EC

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Meade Instruments Corporation

6001 OAK CANYON, IRVINE, CALIFORNIA 92618-5200 U.S.A.

(949) 451-1450 FAX: (949) 451-1460 www.meade.com

Ver. 0300

ETX® is a registered trademark of Meade Instruments Corporation.

Part no. 14-1010-20

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Meade ETX-90EC instruction manual Meade Instruments Corporation, OAK CANYON, IRVINE, CALIFORNIA 92618-5200 U.S.A

Contents

Meade Instruments Corporation Instruction ManualETX-90EC Astro Telescope ETX-125EC Astro Telescope 1. Eyepiece 2. Viewfinder CONTENTSz3 Chapter 5 Optional Accessories Chapter 6 Maintenance and ServicingChapter 2 Telescope Fundamentals Appendix A Tracking Motor SpeedGUIDE Slew SpeedChapter 1 GETTING STARTED Assembly InstructionsParts List OPTIONAL ACCESSORIES, pageGETTING STARTED TELESCOPE FEATURES Quick TipsTelescope Controls Computer Control PanelGETTING STARTEDz Indicator Light KeyACCESSORIES , page Light NoGETTING STARTED ETX-90EC 8 x 21mm Erect-Image ViewfinderETX-90EC ETX-125ECTelescope Focal Length Power = Eyepiece Focal Length Chapter 2TELESCOPE FUNDAMENTALS1900mm Power = = 26mm TELESCOPE FUNDAMENTALS TELESCOPE FUNDAMENTALSz 1. Complete the Polar Alignment Procedure on pageTHE ELECTRONIC CONTROLLER Modes of OperationCelestial Coordinates Polar Alignment ProcedureLocating the Celestial Pole Latitude Balance Weight is recommended if Standard Tripod Leg ETX-90ECHigh-Latitude Tripod Leg ETX-90EC Standard Tripod Leg ETX-125ECChapterz4 OBSERVING OBJECTS IN SPACEThe Moon PlanetsPHOTOGRAPHY WITH BOTH ETX MODELS OBSERVINGzA few tips on photography with both ETX models Chapter 5 OPTIONAL ACCESSORIES PowerAstro Software/Cable Connector Kit ETX-90ECOPTIONAL ACCESSORIES location and a helicoid mechanism allows precise focusingOPTIONALz ACCESSORIES #1244 and #1247 Electric FocusersChapter 6 MAINTENANCEz AND SERVICING General MaintenanceTroubleshooting Storage and TransportMAINTENANCE AND SERVICING Telescope pauses when changing slew directionCHAPTER Unable to see an image through the eyepiece Object appears in the viewfinder but not in the eyepieceSpecifications ETX-90EC Astro Telescope TELESCOPE SPECIFICATIONSSpecifications ETX-125EC Astro Telescope Appendix ATRACKING MOTOR SPEED Indicator Light KeyNorthern Hemisphere Polar Light NoAppendix B HELPFUL CHARTS Setting Circles 24Appendix C PRECISE POLARz ALIGNMENT SETTING CIRCLESAPPENDIX Precise Polar Alignment Appendix D ROADMAPzTO THE STARS Appendix E YOU AND THE UNIVERSE The distance from the Earth to the MoonThe distances between the planets The distance between starsMEADE LIMITED WARRANTY Meade Instruments Corporation 6001 OAK CANYON, IRVINE, CALIFORNIA 92618-5200 U.S.A