Paramount GEM User Guide
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Paramount ME Rear View
Figure 33: The rear view of the Paramount ME.
Hour Angle Axis Locking Holes (Paramount ME Only)
The Paramount ME’s hour angle axis can be locked into one, and only one, position by orienting the
counterweight shaft vertically and then inserting two shoulder bolts (supplied with mount) into both hour
angle locking holes and through the gear. The bolts can be permanently mounted (before shipment, for
example) by threading a nut on end of the bolt that protrudes through the back side of hour angle gear
housing.
The reason the hour angle axis can only be locked when the counterweight shaft is vertical is to prevent
unbalanced payloads from damaging the mount. If the mount’s hour angle axis were to be locked in any
other orientation, unbalanced payload could potentially exert destructive torque on the locking
mechanism.
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