Telescope and Electronic Controller Functions

TELESCOPE AND ELECTRONIC CONTROLLER FUNCTIONS
18	1	2	3	4	5	Features of the ETX-90EC, ETX-
18	1	2	3	4	5	105EC, and ETX-125EC are
						identical, with the exception of
						the size of optical tube and the
						type of viewfinder included as
						standard equipment.
17						19
						19
16						6
(on left
fork arm)
15
14						7
14
13						8
						9
12
						10
11
20	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.

- 5 -

Page 5

Image 5

Meade ETX-105EC, ETX-125EC instruction manual Telescope and Electronic Controller Functions, ETX-90EC Astro Telescope

Contents

Meade Instruments Corporation Page Contents Slew Speed QUICK-START Guide ETX-90EC Astro Telescope Telescope and Electronic Controller Functions Viewfinder ETX Your Personal Window to the UniverseTelescope Controls Computer Control Panel Flip mirror control in the up position Light Blinking Off Indicator Light KeyElectronic Controller Functions Getting Started Focusing the Viewfinder Using The ViewfinderAligning the Viewfinder ETX-90EC 8 x 21mm Erect-Image Viewfinder Alignment Observation TechniquesChoosing an Eyepiece 1900mm Power = = 26mm Telescope Focal Length Power = Eyepiece Focal LengthUnderstanding Magnification Terrestrial Observing Sidereal Rate Astronomical ObservingElectronic Controller Slew Speeds Telescope 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-125EC ETX-90EC Photography Few Tips on Photography Example of a format 1 photo Power Optional AccessoriesPower 2x Barlow ETX-105EC ETX-125EC Eyepiece #825 Right- Angle Viewfinder Storage and Transport General Maintenance Inspecting the Optics Troubleshooting Telescope moves off a terrestrial object while observing Meade Customer Service Specifications 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 Polar Appendix B Helpful Charts Setting Circles Appendix C Precise Polar Alignment Setting Circles Autostar Glossary Appendix D YOU and the UniverseMoon Planets Pleiades is one of the most beautiful open clusters Deep-Sky Objects Meade Limited Warranty Meade Instruments Corporation

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

Models: ETX-105EC ETX-125EC

TELESCOPE AND ELECTRONIC CONTROLLER FUNCTIONS

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

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

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