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General| Aperture | 127 mm |
|---|---|
| Focal Length | 1900 mm |
| Focal Ratio | f/15 |
| Optical Design | Maksutov-Cassegrain |
| Mount Type | Fork mount |
| GoTo | Yes |
Overview of the ETX Observer telescope system, highlighting its key features and capabilities.
Step-by-step guide for tripod assembly, telescope mounting, and initial connections.
Instructions for powering on the telescope and using the Red Dot Finder for pointing.
Guides for setting the telescope's home position, finding North, initializing AudioStar, and performing Easy Align.
Detailed breakdown of the ETX 80 telescope's components and their functions.
Detailed breakdown of the ETX 90/125 telescopes' components and their functions.
Description of the AudioStar handbox, its controls, display, and main functions.
Tips for observing the Moon and terrestrial objects, including optimal viewing conditions.
Guide to navigating AudioStar menus, entering data, using Guided Tours, and accessing the Object Menu.
Procedure for adding, selecting, and editing observing sites in AudioStar.
Instructions for finding objects not in the database and using GO TO for user-entered objects.
Guides for observing satellites and creating custom guided tours for celestial exploration.
Procedures for marking terrestrial landmarks and identifying celestial objects.
Details on advanced Alt/Az alignment, including Two-Star and One-Star methods.
Using the Browse feature to search the AudioStar database by object parameters.
Guidance on selecting eyepieces for optimal magnification and viewing quality.
Information on alternative power adapters and portable power supplies for the telescope.
Details on additional accessories for photography and telescope enhancement.
Recommendations for storing and transporting the telescope to ensure its longevity and protection.
Instructions for cleaning and inspecting the telescope's optical surfaces.
Solutions for common telescope problems related to power, movement, and display.
Procedure to calibrate telescope drives for improved pointing accuracy and tracking performance.
Introduction to celestial objects visible with the ETX telescope, including planets and deep-sky objects.
Detailed technical specifications for the ETX 80, ETX 90, and ETX 125 telescope models.
Explanation of celestial coordinate systems (Right Ascension and Declination) for astronomical navigation.
Guides for polar mounting the telescope and performing various AudioStar polar alignment methods.
Overview of AudioStar's three methods for polar alignment: Easy, One-Star, and Two-Star.
Instructions on using R.A. and Dec. setting circles to locate celestial objects after polar alignment.
A reference chart listing latitudes of major cities worldwide to aid in polar alignment.
Explanation of the refractor (ETX 80) and Maksutov-Cassegrain (ETX 90/125) optical systems.
Information on the proper disposal of the telescope according to environmental regulations.
Contact details and procedures for obtaining customer support and warranty service from Meade.
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