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4. Adjust latitude: Loosen the Latitude Locking Lever.
Turn Latitude Adj. Knob to adjust the latitude until
the arrow points to the current latitude on the
Latitude Scale. Tighten the Latitude Locking Lever.
[TIP: You may lift the handle by push the button on
this ratchet lever to disengage gear teeth and rotate
freely for quick adjustment.]
5. Install counterweight (CW) shaft: Unthread and
remove the CW shaft from top of mount. Thread the
CW shaft into the CW shaft mounting holes.
6. Install counterweight: Before putting on CW, make
sure the mount is at its zero position, i.e., CW shaft
points to the ground. Insert Allen wrench to lock the
RA axle and disengage the R.A. Gear Switch to set the
R.A. axis free before loading the CW. Remove the CW
Safety Cap at the end of CW Shaft. Glide the CW over
the shaft with the larger hole opening facing down.
Tighten the CW Locking Screw to hold the CW in
place. Place the Safety Cap back onto the shaft.
Move the CW to the bottom of the shaft and tighten
the CW locking Screw.
[TIP: GEM28 comes with a 10.4 lbs (4.7 kg) CW,
which should be sufficient for an 8” scope with total
payloads up to about 13 lbs (6kg). Use extra CW or
CW Extension Bar to balance higher payloads.]
7. Install telescope: GEM28 has a Vixen dovetail saddle,
with center adjusting block. Release the dovetail
saddle locking knob and slide the telescope dovetail
plate into the saddle. Tighten the saddle locking
knob.
8. Balance payload: After attaching the scope and
accessories, the mount head assembly must be
balanced in both DEC and RA axes to ensure
minimum stresses on the mount driving mechanism.
CAUTION: The telescope may swing freely when the
R.A. or DEC Gear Switch is disengaged. Always hold
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