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
Telephone: (949)
Fax: (949)
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 |
|
60mm (2.36”) | |
70mm (2.76”) | |
Focal length | 350mm |
Focal ratio (photographic speed) |
|
f/5.8 | |
f/5 | |
Near focus (approx.) |
|
15 ft. (4.6m) | |
17 ft. (5.2m) | |
Resolving power |
|
1.9 arc secs | |
1.6 arc secs | |
Standard | |
Limiting visual stellar magnitude (approx.) |
|
11.2 | |
11.5 | |
Image scale |
|
4.1°/inch | |
4.1°/inch | |
Maximum practical visual power |
|
200X | |
240X | |
Optical tube dimensions |
|
(dia. x length) | 9.3cm x |
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 | |
Motor Drive System | DC servo motors with encoders, both axes |
