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9
5
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10
6
(on left
fork arm)
16
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19
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20
Fig. 1: The ETX-90EC Astro Telescope.
Features of the ETX-90EC, ETX-
105EC, and ETX-125EC are
identical, with the exception of
the size of optical tube and the
type of viewfinder included as
standard equipment.
TELESCOPE AND ELECTRONIC CONTROLLER FUNCTIONS
Fig. 1 (Inset): Computer Control Panel. (A)
On/Off switch;
(B) Auxiliary ports; (C) Handbox port; (D) 12v connector; (E)
Power indicator light.
E
A
B
B C D
8
12
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18
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