groove
Figure 12
Lock
Figure 13
#17 #16
#15 
If you are attaching a second scope, do not add the counterweight. Instead, skip to Step 10 to add a second scope.
8.Slide the counterweight onto the counterbalance shaft (#18). Next, insert the brass pin into the hole on the counterweight.
9.Secure the counterweight by tightening the lock knob.
Counter weight is heavy. Please handle with care to avoid injury!
This step is for attaching a second scope.
10.Attach Secondary Dovetail Holder (#16) by tightening the holder lock (#15) onto the counterweight shaft (#18).
After sliding your scope into the dovetail
Figure 14
2.2.OTA Mounting and Balancing
The iOptron MiniTower Pro™ can handle various OTAs. A dovetail plate is needed to mount an OTA onto the MiniTower Pro mount. The width of the MiniTower ProTM dovetail holder is 1.75”.
Most telescopes come with a dovetail plate installed on the bottom of the telescope. If the size of dovetail plate does not match un- screw the plate and install an appropriate
dovetail plate that matches the holder. 1.75” dovetail plates are available from iOptron at www.iOptron.com (part number #8422) or visit an online or local camera store.
Some telescopes may not have screw holes on the bottom. In this case you may need compatible mounting rings to attach the dovetail plate. The size of the mounting rings should match the aperture of your OTA.
The counter weight (CW) is always helpful to balance the OTA in order to have smooth
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