Meade instruction manual Meade Customer Service, ETX-60AT/ETX-70AT Specifications

Page 29

Telescope moves off a terrestrial object while observing:

•Verify that the vertical and horizontal locks have been tightened to a "firm feel" (6 and 9 Fig. 1).

Telescope pauses when changing slew direction:

•This pause is normal.

A terrestrial object appears reversed left-for-right:

•An eyepiece in the standard 90° observing position (3, Fig. 1) yields this image orientation. To view a correctly oriented image, the optional #933 Erecting Prism is required. See “OPTIONAL ACCESSORIES,” page 25.

Meade Customer Service

If you have a question concerning your ETX-60AT or ETX-70AT, contact the Meade Instruments Customer Service Department at:

Telephone: (949) 451-1450

Customer Service hours are 8:30 AM to 4:30 PM, Pacific Time, Monday through Friday. In the unlike- ly event that the ETX requires factory servicing or repairs, write or call the Meade Customer Service Department first, before returning the telescope to the factory, giving full particulars as to the nature of the problem, as well as your name, address, and daytime telephone number. The great majority of servicing issues can be resolved by telephone, avoiding return of the telescope to the factory.

ETX-60AT/ETX-70AT Specifications

Optical design

Achromatic Refractor

Clear aperture

 

ETX-60AT

60mm (2.36”)

ETX-70AT

70mm (2.76”)

Focal length

350mm

Focal ratio (photographic speed)

 

ETX-60AT

f/5.8

ETX-70AT

f/5

Near focus (approx.)

 

ETX-60AT

15 ft. (4.6m)

ETX-70AT

17 ft. (5.2m)

Resolving power

 

ETX-60AT

1.9 arc secs

ETX-70AT

1.6 arc secs

Multi-coatings on objective lens

Standard

Limiting visual stellar magnitude (approx.)

 

ETX-60AT

11.2

ETX-70AT

11.5

Image scale

 

ETX-60AT

4.1°/inch

ETX-70AT

4.1°/inch

Maximum practical visual power

 

ETX-60AT

200X

ETX-70AT

240X

Optical tube dimensions

 

(dia. x length)

9.3cm x 30.4-37.1cm (3.6” x 12-14.6”)

Eyepieces

 

Modified Achromatic

MA 25mm (1.25” O.D.)

Modified Achromatic

MA 9mm (1.25” O.D.)

Telescope mounting

Fork type; double tine

Setting circle diameters

Dec: 3.5”; RA: 7”

Input voltage

9-volts DC

Motor Drive System

DC servo motors with encoders, both axes

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Contents Meade Instruments Corporation Contents QUICK-START Guide If you wish to observe using Autostar’s databases, go toETX-60AT and ETX-70AT Telescope Telescope FeaturesETX Your Personal Window to the Universe Flip mirror control in the up position Computer Control PanelTour the Cosmos with Just the Push of a Button Autostar FeaturesAutostar Features Join an Astronomy Club Attend a Star Party How to Assemble Your Telescope Parts ListingGetting Started Choosing an EyepieceManual Operation of the Telescope without Autostar Manual Operation of the Telescope Using Autostars Arrow KeysInitializing Autostar Moving Through Autostar’s MenusAutostar Navigation Exercise Autostar OperationTo Calculate Sunset time Easy Two-Star Alignment ProcedureEasy Two-Star Alignment Go To Saturn Using the Guided TourObserving Exercises Object Menu Autostar MenusComplete Autostar Menu Structure Event Menu Utilities Menu Glossary MenuSurf the Web Setup MenuMenu Daylight Saving, Advanced Features Slew Speeds Two-Star Alt/Az AlignmentOne-Star Alt/Az Alignment Photography with the ETX Observing a SatelliteFew tips on photography with the ETX-60AT or ETX-70AT Instrument across the two slots and turn counAstrofinder Software Optional Accessories#882 Standard Field Tripod set in Alt/Az Configuration General Maintenance Maintenance and ServicingStorage and Transport Inspecting the OpticsUnable to see an image through the eyepiece TroubleshootingETX-60AT/ETX-70AT Specifications Meade Customer ServiceAutostar Dimensions ETX-60AT/ETX-70AT Specifications contdAutostar Specifications Celestial Coordinates Appendix a Equatorial Polar AlignmentPolar Alignment Easy Polar Alignment Autostar Polar AlignmentOne-Star Polar Alignment Two-Star Polar AlignmentTo GO to a user-entered object Appendix B Using Autostar to Enter R.A. and DEC CoordinatesLatitude Chart for Major Cities of the World Appendix C Helpful ChartsCity State Latitude City Country LatitudeFurther Study Appendix D Training the DriveEnter Appendix E Initialization ExampleAutostar Glossary Basic AstronomyObjects in Space MoonDeep-Sky Objects PlanetsSeason Star Name Constellation Dec Star LocatorMeade Instruments Corporation

ETX-70AT specifications

The Meade ETX-70AT is a compact, portable telescope that caters to both amateur astronomers and educational purposes. This telescope is part of the renowned ETX series, known for its innovative features and user-friendly design. With an aperture of 70mm, the ETX-70AT is designed to provide clear, bright images of celestial objects, making it an ideal choice for novice astronomers eager to explore the night sky.

One of the standout features of the ETX-70AT is its Maksutov-Cassegrain optical design. This design combines a Maksutov corrector plate with a compact cassegrain layout, allowing for a shorter tube length while still providing excellent optical performance. As a result, users can easily transport the telescope to various observing locations without compromising on image quality.

The telescope boasts a focal length of 350mm, which offers a wide field of view, allowing observers to comfortably locate and track celestial phenomena. The ETX-70AT comes equipped with a built-in electronic control system known as the Audio Star, featuring a database of over 30,000 celestial objects. This system not only makes it easier for users to locate specific targets but also enhances the overall observing experience by providing informative audio commentary about different astronomical objects.

Another notable characteristic is its lightweight design, weighing in at just around 5 lbs. This portability factor makes it an excellent choice for stargazers who prefer to travel or hike to optimal viewing locations. The telescope is mounted on an adjustable and stable aluminum tripods, providing a solid foundation for viewing.

The Meade ETX-70AT also includes a variety of accessories, including two eyepieces (26mm and 9.7mm), a finder scope to help users aim accurately, and a variety of optional filters to enhance viewing contrast and clarity. Furthermore, the telescope supports direct connection to a computer for astrophotography, enabling enthusiasts to capture their astronomical observations digitally.

In summary, the Meade ETX-70AT is an exceptional entry-level telescope that combines portability, advanced technology, and ease of use. With its powerful optics, automated features, and impressive accessory offerings, it serves as an excellent tool for any individual or educational institution looking to delve into the wonders of astronomy.
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