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THE EYEPIECES
Your telescope comes with two eyepieces, a low power (20 mm eyepiece) and a higher power eyepiece (10 mm
eyepiece). Whenever you set up your telescope, always start with the 20 mm eyepiece. Once you have your target
centered in the 20 mm eyepiece, you can switch to your higher power 10 mm eyepiece to get a more detailed view.
Note that because your telescope is designed for astronomical use, images of terrestrial objects will appear mirror-
reversed. This is normal.
To install an eyepiece:
1. Loosen the thumb screw on the open end of the star diagonal.
2. Insert the silver barrel of the 20 mm eyepiece into the star
diagonal.
3. Tighten the thumb screw to secure the eyepiece
4. To see the sharpest image possible, you need to focus. This is
done by looking through the eyepiece and slowly turning the
focusing knob until you fi nd the sharpest image.
THE FINDERSCOPE
The AstroMaster LT 80AZ comes with a fi nderscope that you will use as a sighting tool when aiming the telescope at
a distant target. The fi nderscope is permanently attached to the telescope tube, but you need to install its CR1620
battery:
1. Make sure that the knob securing the telescope tube to the tripod is fully tightened.
2. Twist the panning handle to allow the mount to move up and down easily. Point the scope downward and retighten
the handle.
3. Use the included fl at triangular slotted screwdriver tool to open the battery compartment. Insert the tool into the slot
on the battery cover and turn it counterclockwise.
4. Insert the battery into the compartment with the positive (+) side facing up.
5. Replace the battery cover using the screwdriver tool.
NOTE
:
To prevent corrosion it is best to remove the battery if the scope will not be used for a long period of time.
Fig. 5
Fig. 4
Focus knobs
