Celestron ASTROMASTER 90 EQ Quick Setup Manual page 3

ALIGNING THE
FINDERSCOPE
The finder is one of the most important parts of your telescope. It helps you locate
objects and center them in the eyepiece. The first time you assemble your telescope,
you need to align the finder to the telescope's main optics. It's best to do this during
the day*.
* SOLAR WARNING! Never attempt to view the Sun through any telescope
without a proper solar filter!
1
CHOOSE A TARGET
Take the telescope outside during the day and find an
easily recognizable object, like a streetlight, license
plate or sign. The object should be as far away as
possible, but at least a quarter mile away.
4
Power Switch
Adjustment Knobs
ADJUST THE FINDERSCOPE
Turn on the Finderscope. Without moving the
telescope, use the two adjustment knobs to move
the finder around until the red dot appears over the
same object you are observing in the telescope's
20 mm eyepiece.
2
Low Power Eyepiece
Focus Knob
CENTER THE TARGET
IN THE EYEPIECE
Look through the telescope using your lower powered
eyepiece. Move the telescope until the object you chose
lies in the center of the view. If the image is blurry,
gently turn the focus knob until it comes into sharp
focus.
5
YOUR FINDERSCOPE IS
NOW ALIGNED!
It should not require realignment unless it is bumped
or dropped.
For longer battery life be sure to turn off
finderscope when not in use.
3
LOOK THROUGH FINDERSCOPE
Once the object is centered in your 20mm eyepiece,
look through the finderscope and locate the red dot.
ENGLISH | 3