Cloud Break Optics

CEM120

CEM120 - Main image
$4059.3 $5799 In stock

Category: Mounts

Description

Introducing the new iOptron CEM120 center balance equatorial mount.

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 115lbs (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 CEM120s performance is demonstrated by its low periodic tracking error of +/- 3.5 arc seconds and down to <0.15 arc sec RMS with the EC model.  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.  The CEM 120 will initially be available in two versions, the CEM120 and the CEM120EC (The EC version has high resolution encoders for real time nearly error free tracking, the EC2 version has encoders on both axes).  

The CEM120 and CEM120EC are available to order now and will start delivery end of December 2017. 

Specifications

  • A new design, center-balanced equatorial mount (CEM) for maximum payload with natural stability
  • Observatory astrophotography mount ideal for both visual observation  and Astrophotography
  • Payload of 115 lbs (52 kg) with the mount weight of 57 lbs (26 kg)
  • Easy to use and reliable gear clutches
  • Adjustable counterweight shaft for 0º latitude operation
  • 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+ controller with Advanced GOTONOVA® GOTO Technology with built in heater
  • Permanent periodic error correction (PPEC) or real time PEC (RPEC) for the CEM120EC
  • Built-in 32-channel Global Positioning System (GPS)
  • Built-in Wi-Fi and LAN for remote operation
  • Integrated ST-4 auto guiding port
  • Advanced cable management system with more choices
  • Spring loaded, individual adjustable Losmandy style saddle

CEM120 Specifications

Manufacture

iOptron

Model

CEM120/CEM120EC

Mount Type

CEM (Center balanced EQ Mount)

Payload (excl. CW)

52 kg(115 lbs)

Mount Weight

26 kg (57 lbs)

Payload/Mount Weight

2

Latitude Adjustment Range

 0~68° (0.5 arc min devision)

Azimuth Adjustment Range

±5° (3 arc min division)

Tracking Accuracy (PE)

<±3.5 arcsec, < 0.15 arcsec RMS (EC)

Period

240 sec

Right Ascension Worm Wheel

360 teeth,  Ø216 mm, zero backlash

Declination Worm Wheel

360 teeth,  Ø216 mm, zero backlash

Worm

 Ø26 mm

Right Ascension Axle

 Ø80 mm, steel

Declination Axle

 Ø80 mm, steel

Right Ascension Bearings

Ø125 mm

Declination Bearings

Ø125 mm

Counterweight Shaft

Ø38.1 x 540 mm (SS, none slip, 4.5 kg)

Counterweight

10 kg (22 lbs) x2

Mounting Base Diameter

210 x 230 mm

Motor

precision stepper motor w/128 micor-step

Resolution

0.07 arcsec

Hand Controller

Go2Nova 8407+;  8 line 21 character LCD

Power

DC 12V, 5A

Power Consumption

0.7A (tracking), 1.8A (GOTO)

Polar Scope

Optional internal electronic polar scope

Meridian treatment

Stop (0-14° pass), flip

Zero position

Automatic zero search

Park position

horizontal, vertical, current, alt/azi input

Dovetail saddle

Losmandy D, 17.2" (437 mm)

Level Indicator

YES

Slew speed

4°/sec (960x) max.

PEC

PPEC/Real time PEC (CEM120EC)

Guiding Port

ST-4

Serial Port

RS232, USB, LAN, WIFI

GPS

YES

Cable Management

2xDC12V (1A), DC5V(1A), 2xDC (5A), ST4, 6P6C, 4xUSB2.0, USB3.0 (powered), USB for PS, AUX

Pier/Tripod

Optional Pier


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Customer Reviews (5.0 / 5 · 5 reviews)

Steven T. ★★★★★

Balancing my 14-inch scope on this mount was surprisingly quick thanks to the center balance design, and it tracks smoothly even in gusty conditions. The payload capacity gives me confidence for future upgrades without worrying about stability.

Abigail ★★★★★

I’ve had the CEM120 for a few weeks now, and the center balance design makes loading heavy gear feel much more secure. The tracking accuracy is incredible—I can nail 10-minute subs without any noticeable drift. Definitely worth the upgrade for deep-sky imaging.

Ellie ★★★★★

Setup was surprisingly quick compared to my old mount, and the center balance design makes loading heavy gear feel much more secure. It’s handled a full imaging rig without a hint of struggle even on breezy nights.