1
3
4
8
Q
9
S
1
Eyepiece
2
Red Dot Viewfinder
3
Eyepiece Holder Thumbscrew
4
90° Eyepiece Holder
5
Optical Tube
6
Vertical Lock
7
Fork Arms
8
Focus Knob
9
Horizontal Lock
Computer Control Panel
ON/OFF Switch
Figure 3: ETX90 Right Side
2
Auxiliary (AUX) Port
Handbox (HBX) Port
Battery Connector (not shown, accessible
thru battery compartment door on top of
base housing)
LED
Base Housing
1&
Battery Compartment (not shown, accessible
thru battery compartment door on top of
base housing)
1*
AutoStar Suite DVD
1(
Right Ascension (R.A.) Setting Circle
5
6
7
R
13
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