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Meade ETX-105AT Manual

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Object appears in the viewfinder but not in the eyepiece:
• The viewfinder is not properly aligned with the telescope (see ALIGNING THE
VIEWFINDER
,
page 14).
Slew speed does not change when you press the SPEED key or the telescope
moves slowly even though the fast slew speed is chosen:
• The battery power may be low (see HOW TO ASSEMBLE, page 12).
Telescope does not track a celestial object:
• Make sure that the telescope is correctly aligned. See EASY (TWO-STAR) ALIGN, page
18, for more information.
Images through the eyepiece appear unfocused or distorted:
• The magnification may be too high for the viewing conditions. Back off to a lower
power eyepiece (see
CHOOSING AN EYEPIECE, page 15).
• If inside a warm house or building, move outside. Interior air conditions may distort
terrestrial or celestial images, making it difficult, if not impossible, to obtain a sharp
focus. For optimal viewing, use the telescope outside in the open air instead of
observing through an open or closed window or screen.
• If viewing a land object on a warm day, heat waves will distort the image (see
TERRESTRIAL OBSERVING, page 16).
• For clear viewing of objects, turn the focus knob (
8, Fig. 1) slowly since the “in-focus”
point of a telescope is precise. Turning the focus knob too quickly may cause the
focus point to pass without notice.
• The optics within the telescope need time to adjust to the outside ambient
temperature to provide the sharpest image. To cool down the optics, set the
telescope outside for 10 to 15 minutes before observing begins.
Telescope moves off a terrestrial object while observing:
• Verify that the vertical and horizontal locks are tight (see TELESCOPE FEATURES,
page 6).
Telescope does not move past a certain point:
• The built-in vertical or horizontal rotational “stops” may have been reached. See #6,
page 7.
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 (4, Fig. 1) reverses an object
left-for-right: To view a correctly oriented image requires the optional #932 Erecting
Prism (see
OPTIONAL ACCESSORIES, page 43).
Meade Customer Service
If you have a question concerning your ETX model, call the Meade Instruments
Customer Service Department at (949) 451-1450. Customer Service hours are 7:00
AM to 6:00 PM, Pacific Time, Monday through Friday. In the unlikely 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.
… 47 …


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