iOptron CEM70 User Manual

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Adjust the gear adjustment screw on the side inside the large hole by using the 3mm hex key. Turn
counterclockwise to loosen the meshing or turn clockwise to tighten the meshing.
If the motor stalls or the mount does not tracking smoothly, most likely the meshing is too tight. You
may loosen it by about 1/8 turn (or less for tracking). Tighten the set screw in the small hole to
LOCK the gear screw (important) before test the mount. Adjust again if needed, but no more than
¼ turn in total.
If you feel there is free play between the worm and gear, you may tighten the gear screw to eliminate it.
To Adjust RA Gear:
The RA gear meshing adjustment screw is located next to the RA Gear Switch. The adjustment is same
as that for DEC gear/worm.
Please contact support@ioptron.com if you need more information.
3mm
5mm

iOptron CEM70 Specifications

General

Azimuth Adjustment	±10°
Level Indicator	Yes
Database	212, 000+ objects
Payload Capacity	70 lbs (31.8 kg)
Slew Speed	6.5°/sec
Counterweight Shaft	28mm diameter
Polar Scope	Built-in, illuminated
Go2Nova® Hand Controller	Yes
GPS	Built-in
Communication Ports	USB, RS-232, ST-4
Power Supply	12V DC
Dovetail Saddle	Losmandy/Vixen dual saddle
PEC	Permanent PEC
Guiding	ST-4
Tripod	Optional
Tracking Accuracy	≤ ±5 arcsec