User's Manual

5
1. CEM70 Introduction
Welcome to a new type of equatorial mount – the iOptron
®
Center-Balanced Equatorial Mount,
or CEM! CEM70 mount offers the benefits of our revolutionary “center balance” design: stability,
accuracy, and smooth mechanical operation, while capable of carrying a payload up to 70 lbs (31.8 kg).
The “center balance” design’s natural stability is due to its focusing the mount along with payloads
weight directly over the center of the pier or tripod.
The CEM70's performance is demonstrated by its low periodic tracking error: <±3.5 arc seconds
for CEM70 and CEM70G, and <0.3 arcsec RMS for CEM70EC. Along with the stability aspect, the
CEM70 features an advanced cable management system consisting of more ports in more locations
preventing tangle ups and reducing the chance of fractured cables.
This mount also has an integrated electronic polar finder scope known as the iPolar. This tool
ensures the accurate alignment of a telescope, even when the pole star is obscured. There are large
levers on the quick-lock drive engagement system; these large levers make it easy to snap the gears
into place.
The CEM70 family currently has CEM70 standard version (#C70A), CEM70G with iGuider
TM
autoguiding system(#C70AG) and CEM70EC with high precision encoder. The CEM70G mount also
has a USB 3.0 connection and WIFI connection.
The CEM70 mount is equipped with the most advanced GOTONOVA
®
GOTO technology,
making it one of the most powerful and accurate GOTO mounts available. TheGo2Nova
®
8407+ hand
controller has a database of over 212,000 objects making it easy to locate even the faintest celestial
objects.
Features:
 A new design, center-balanced equatorial mount (CEM) for maximum payload with natural
stability
 Ideal for both visual observation and astrophotography
 Payload of 70 lbs (31.8 kg) with the mount weight of only 30 lbs (13.6 kg)
 Large easy to use quick-lock gear clutches
 Precision altitude and azimuth adjustment.
 Precision stepper motor with 0.07 arcsec accuracy for precise GOTO and accurate tracking
 Integrated iPolar™ electronic polar finder
 Go2Nova
®
8407+ controller with Advanced GOTONOVA
®
GOTO Technology with built in heater
 High precision tracking with low periodic error: PE<±3.5 arcsec for CEM70 and CEM70G, or PE
<0.3 arcsec rms for CEM70EC
 Permanent periodic error correction (PPEC) (CEM70 and CEM70G) or Real-time periodic error
correction (RPEC) (CEM70EC)
 Built-in 32-channel Global Positioning System (GPS)
 Integrated ST-4 autoguiding port
 AutoZero
TM
technology for mount remote operation
 Power-down memorization of GOTO and tracking position
 Advanced cable management system with more choices
 Dual saddle, Losmandy and Vixen style
 USB communication port standard
 Wi-Fi and USB3.0 connection (CEM70G only)
 Built in optical guiding system, iGuider (CEM70G only)