Instructions / Assembly

ALIGNING THE ETX
Aligning the ETX
To automatically track and locate objects in the night
sky, the ETX must rst be aligned on the sky. It is best
to set up the telescope in twilight or before sunset the
rst time you use the ETX. Setup the telescope in a
large open area where you can see lots of the night
sky. Make sure the ground is stable and approximately
level. It is best to setup the scope away from bright
nighttime lighting. Bright lights will spoil your night
vision and impede you ability to see the sky.
The ETX “Alt/Az” Home Position
Once the ETX is fully assembled, you will rst need
to initialize AudioStar, set the telescope into the home
position, and perform the Easy Alignment in order for
the ETX to successfully locate celestial objects.
The home position for the ETX is with the telescope
optical tube level and pointed in the direction of either
True North or Magnetic North. See Figure 1. Correct
telescope placement in the home position will ensure
the successful location of the alignment stars.
9
Adjusting the Red Dot Finder
Now, without moving the telescope, adjust the indicated
thumb screws until you have put the red dot on the
object at which you were looking. It’s that simple.
Now use the hand controller to put the laser dot on a
new target. Check to see that the desired target is in
the eyepiece and adjust the focus knob until the object
is in focus.
NOTE: Be sure to turn off red dot when not in use.
Adjustment
Screws
Focus Knob
Focus Knob
ETX 80 Focus Knob
ETX 90 Focus Knob
Telescope
Tube is level
True or Magnetic
North
Figure 1: Alt/Az Home Position