Meade ETX-105EC Telescope and Electronic Controller Functions, ETX-90EC Astro Telescope

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TELESCOPE AND ELECTRONIC CONTROLLER FUNCTIONS

 

 

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Features of the ETX-90EC, ETX-

105EC, and ETX-125EC are

 

 

 

 

 

 

identical, with the exception of

 

 

 

 

 

 

the size of optical tube and the

 

 

 

 

 

 

type of viewfinder included as

 

 

 

 

 

 

standard equipment.

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(on left

 

 

 

 

 

 

fork arm)

 

 

 

 

 

 

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E

 

 

 

 

 

Fig. 1: The ETX-90EC Astro Telescope.

 

 

 

 

 

 

B C D A B

Fig. 1 (Inset): Computer Control Panel. (A) On/Off switch;

(B)Auxiliary ports; (C) Handbox port; (D) 12v connector; (E) Power indicator light.

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Contents Meade Instruments Corporation Page Contents Slew Speed QUICK-START GuideETX-90EC Astro Telescope Telescope and Electronic Controller FunctionsViewfinder ETX Your Personal Window to the UniverseTelescope Controls Computer Control Panel Flip mirror control in the up positionLight Blinking Off Indicator Light KeyElectronic Controller Functions Getting Started Focusing the Viewfinder Using The ViewfinderAligning the Viewfinder ETX-90EC 8 x 21mm Erect-Image ViewfinderAlignment Observation TechniquesChoosing an Eyepiece 1900mm Power = = 26mm Telescope Focal Length Power = Eyepiece Focal LengthUnderstanding Magnification Terrestrial ObservingSidereal Rate Astronomical ObservingElectronic Controller Slew SpeedsTelescope Mountings Alt/Az ModeModes of Operation You use Polar or Equatorial mounting. By Polar ModeTo move the telescope using the Electronic Controller Locating the Celestial Pole Polar Alignment ProcedureCelestial Coordinates High-Latitude Tripod Leg ETX-90EC Standard Tripod Leg ETX-90ECStandard Tripod Leg ETX-105EC, ETX-125EC High-Latitude Tripod Leg ETX-105EC, ETX-125ECETX-90EC PhotographyFew Tips on Photography Example of a format 1 photoPower Optional AccessoriesPower 2x Barlow ETX-105EC ETX-125EC Eyepiece#825 Right- Angle Viewfinder Storage and Transport General MaintenanceInspecting the Optics TroubleshootingTelescope moves off a terrestrial object while observing Meade Customer ServiceSpecifications ETX-125EC Astro Telescope Specifications ETX-90EC Astro TelescopeSpecifications ETX-105EC Astro Telescope Appendix a Advanced Electronic Controller Functions Changing Modes Using the Electronic ControllerTracking Motor Speeds Northern Hemisphere PolarAppendix B Helpful Charts Setting Circles Appendix C Precise Polar Alignment Setting CirclesAutostar Glossary Appendix D YOU and the UniverseMoon PlanetsPleiades is one of the most beautiful open clusters Deep-Sky ObjectsMeade Limited Warranty Meade Instruments Corporation