iOptron CEM70 Quick Start Guide

CEM70 USB 2.0 Connection Check
Tool needed: a set of metric Allen wrench
1. Release two small set screws on the side of the
RA axle rear cover.
2. Pull the RA axle cover open to expose the USB
plug. Check the USB wires and make sure it is
plugged in firmly.
3. To check iPolar connection, remove the iPolar
cap, loosen two setting screws.
4. Pull out the iPolar. Unplug the cable. Check the
plug. Gently pull the cable to check if cable is
loose somewhere.
5. Rotate the dovetail saddle to the side. Release
two screws that hold the USB box to the
dovetail saddle.
6. Remove 4 screws that hold the dovetail saddle
onto the Dec axle.
7. Lift dovetail saddle to expose the USB hub with
cables. Check the USB cable and the iPolar plugs.

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