Appendix A - Meade ETX-125 Instruction Manual

• Verify the telescopes date, time, location,
daylight savings time, and telescope model
are correct.
• Reset the telescope to the factory defaults.
Go to Setup/Reset and press enter.
Images through the eyepiece appear unfocused or
distorted:
viewing conditions. Back off to a lower power
eyepiece (see "Eyepiece Calc", page 30) and
"Choosing Eyepiece" page 44.
• If inside a warm house or building, move
outside. Interior air conditions may distort
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 25).
• For clear viewing of objects, turn the focus knob
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 ETX KEY FEATURES, page 14 or
page 18 depending on your telescope model).
Telescope pauses when changing slew direction:
• This pause is normal.
• Perform the "Training the Drive" routine. See
Appendix A: Training the Drive" on page 50.
• Adjust the AZ/RA Percent and/or Alt/DEC
Percent values found in the Setup/Telescope
menu. See page 31 & 32 "Az Percent" & "Alt
Percent" for more information.
A terrestrial object appears reversed left-for-right:
• An eyepiece in the standard 90° observing
position reverses an object left-for-right: To
view a correctly oriented image requires the
optional 45°Erecting Prism (see page 46).
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