iOptron CEM120 Center Balanced Equatorial GoTo Mount

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iOptron CEM120 Center Balanced Equatorial GoTo Mount

£4,449.00

(1 Review)

✓ 2 year warranty

Product description
In the box
Specifications
Downloads
FAQ

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Frequently bought with this product:

	iOptron 10kg Counterweight for CEM120
	Lynx Astro Silicone Power Cable 2.5mm DC Jack
	Lynx Astro Silicone Power Cable 2.1mm DC Jack to 2.5mm DC Jack

About this product

Model: iop_cem120_7300
Part Number: 7300

An extraordinary innovation in mount design. Now with increased payload!

Recognizing the growing demand for an accurate and stable, equatorial mount with the versatility to carry larger instruments and more complex imaging arrays, we created the iOptron CEM120. It offers the benefits of our revolutionary “center balance” design: stability, accuracy, and smooth mechanical operation, while capable of carrying a payload up to 115 lbs (52 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 CEM120's performance is demonstrated by its low periodic tracking error of ±3.5 arc seconds. Along with the stability aspect, the CEM120 features an advanced cable management system consisting of more ports in more locations preventing tangle ups and reducing the chance of fractured cables. It also adds some new features to the CEM family like Wi-Fi and LAN for remote operation and easy to use, reliable clutches on both axes.

Optional heavy duty Tri-Pier 360 and Permanent Pier are available for order.

Optional Tri-Pier adapter for light weight payload ( 8036-120) is also available It can be modified for permanent pier mounting.

FEATURES

A new design, center-balanced equatorial mount (CEM) for maximum payload with natural stability
Observatory astrophotography mount ideal for both visual and Astro-photographers
Payload of 115 lbs (52 kg) with the mount weight of 57 lbs (26 kg)
Easy to use and reliable gear clutches
Precision altitude and azimuth adjustment.
Precision stepper motor with 0.07 arcsec accuracy for precise GOTO and accurate tracking
Polar alignment routine for those who can't see the Pole Star
Go2Nova® 8407 V2 controller with Advanced GOTONOVA® GOTO Technology with built in heater
High precision tracking with low periodic error (PE)<±3.5 arcsec
Permanent periodic error correction (PPEC)
32-channel Global Positioning System (GPS)
Built-in WiFi and LAN for remote operation
Integrated ST-4 autoguiding port
Advanced cable management system with more choices
Spring loaded, individual adjustable Losmandy saddle

Go2Nova Hand Controller 8407

300,000+ object database
8 line, 21 character back lit large screen LCD
Low temperature operation as low as -20ºC
User friendly interface
9 speed slew control with quiet mode
Large object database
Serial port for firmware upgrade

Base Plate Drawing

What's in the box

Telescope mount
Hand controller (HC) – Go2Nova® #8407
2x Counterweight (10 kg/22 lbs)
Stainless steel counterweight shaft (4.6kg)
HC controller cable
RS232‐RJ9 serial cable
12V5A AC adapter – 100‐240V
4X Base mounting screws
GPS external antenna
Wi‐Fi external antenna
Quick Start Guide

Specifications

Mount	Center-balanced Equatorial Mount (CEM)
Payload	52kg (115 lbs), exclude counterweight*
Mount weight	26kg (57 lbs)
Payload/Mount weight ratio	2
Material	All metal
Latitude adjustment range	0°~ 68° (0.5 arcmin division)**
Azimuth adjustment range	± 5° (3 arcmin division)
PE (by encoder)	< ±3.5 arcsec
Worm period	240 sec
PEC	PPEC
Right Ascension worm wheel	Φ216mm, 360 teeth, zero backlash
Declination worm wheel	Φ216mm, 360 teeth, zero backlash
Worm	Φ26mm
Right Ascension axle	Φ80mm, steel
Declination axle	Φ80mm, steel
Right Ascension bearings	Φ125mm
Declination bearings	Φ125mm
Counterweight shaft	Φ38.1x 540 mm (SS, anti-slip, 4.5kg)
Counterweight	10 kg (22 lbs)
Mount base size	210 x 230 mm
Motor drive	Precision stepper motor w/128 micro-step
Resolution	0.07 arc seconds
Slew speed	4°/sec (960x) max.
Hand Controller	Go2Nova® 8407 V2, 8 line 21 character LCD
Power requirement	DC 12V, 5A
Power consumption	0.7A(Tracking),1.8A(GOTO)
Polar Scope	Optional electronic polar scope
Meridian treatment	Stop (0-14° pass), auto flip
Zero position	Automatic zero search
Park position	Horizontal, vertical, current, alt/azi input
Level indicator	YES
Dovetail saddle	Losmandy D, 17.2" (437mm)
GPS	YES
Guiding port	ST-4
Communication port	RS232, USB, LAN, WiFi
Cable management	2xDC12V (1A), DC5V(1A), 2xDC (5A), ST4, 6P6C, 4xUSB2.0, USB3.0 (powered), USB for PS, AUX
Pier/Tripod	Optional pier
Warranty	Two year limited

* These are only guidelines. Some telescopes are very long or very big for their weight and may require a larger mount. Remember also that imaging requirements are more rigid than visual observation.

Downloads / Manuals

Manual:

Quick Start Guide
Instruction Manual
Electronic Polar Scope (PoleMaster) Installation Instructions
AUX port plug (DIN-422) assembly

Firmware:

Download Latest Firmware

iOptron Telescope ASCOM Driver:

Install ASCOM Driver and Commander

Customer reviews

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Initial thoughts on my new CEM120

26 September 2024 | Kevan

First, it is heavy. But of course I knew that before purchasing. This doesn’t matter for me because I need an observatory class mount and at this price point I found the CEM120 and EQ8-R were the best fit for my requirements. I installed the mount onto an 8” Skyshed pier, and managed to use the supplied knobs (which are too short for a nut underneath) by drilling and tapping an M8 thread into the pier top plate. Only one clear night since installing last week but it guided 0.2 to 0.4 which will do quite nicely. So far, a good investment.