Bedienungsanleitung Meade ETX-105AT (Seite 46 von 60) (Englisch)

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Storage and Transport

When the telescope is not in use, store it in a cool, dry place. Do not expose the

instrument to excessive heat or moisture. It is best to store the telescope in its

original box with the vertical and horizontal locks (6 and 9, Fig. 1) in the unlocked

positions. If shipping the telescope, use the original box and packing material to

protect the telescope during shipment.

When transporting the telescope, take care not to bump or drop the instrument; this

type of abuse can damage the optical tube and/or the objective lens and knock the

optics out of alignment. It is highly recommended to use an optional carry case to

transport the telescope (see

OPTIONAL ACCESSORIES, page 43).

Inspecting the Optics

A few words about the so-called “Flashlight Test:" If a flashlight or other

high-intensity light source is pointed down the main telescope tube, the view

(depending upon the observer’s line of sight and the angle of the light) may reveal

what appear to be scratches, dark or bright spots or uneven coatings, giving the

appearance of poor quality optics. These effects are only seen when a high intensity

light is transmitted through lenses or reflected off the mirrors and can be seen on any

high-quality optical system, including giant research telescopes.

The optical quality of a telescope cannot be judged by the “flashlight” test; the true test

of optical quality can only be conducted through careful star testing.

Troubleshooting

The following suggestions may be helpful with operation of the ETX-90AT,

ETX-105AT and ETX-125AT.

The power indicator light on the telescope does not come on or there is no

response when pressing the Autostar Arrow keys:

• Verify that the Computer Control panel power switch (A, Fig. 2) is in the ON

position.

• Verify that the Autostar coil cord is firmly connected to the HBX port (

C, Fig. 2).

• If using internal power (batteries), verify that the batteries are installed correctly and

that they have sufficient charge (see

HOW TO ASSEMBLE YOUR TELESCOPE AND

TRIPOD, page 12).

Note: If the batteries are getting low on charge, there will be a marked

difference in the slew speed. The speed indicator lights may also flash and

the speed may change. If any of these symptoms occurs, turn the power off

and replace the batteries.

• If using an external power source, verify that it is properly connected between the

12-volt connector (

D, Fig. 3) and either a wall plug (AC source) or a car cigarette

lighter (DC source).

• If Autostar does not respond to commands, move the power switch to OFF and then

back to ON.

• If the telescope does not slew after power is applied or if the motor quits or stalls,

verify that there are no physical obstructions that would impede telescope

movement.

• If all physical obstacles are removed and the telescope still does not move

properly, turn off the power and unplug Autostar. Plug Autostar back in and turn the

power back on.

Unable to see an image through the eyepiece:

• Confirm that the lens cover has been removed from the telescope.

• Confirm that the flip-mirror control (

14, Fig. 1) is in the “up” position if using the

eyepiece holder (

4, Fig. 1) so that light is directed to the eyepiece (1, Fig. 1).

Confirm that the flip-mirror control is in the “down” position if using the #932

Erecting Prism or doing photography with an ETX model (see

TELESCOPE

FEATURES, page 6 and PHOTOGRAPHY, page 40).

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Meade ETX-105AT Seite 46

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