Skip to content
  • 🌟 Get the best deal on 🌟Featured Items🌟 and snap sales!🌟
  • 🌟 Get the best deal on 🌟Featured Items🌟 and snap sales!🌟
Telescope Sales ShopTelescope Sales Shop
    • No products in the cart.

      Return to shop

  • Cart

    No products in the cart.

    Return to shop

  • Telescope accessories
    • Parts & spares
    • Straylight and glare shields
    • Finder
    • Prisms & Diagonal mirrors
    • Transport & storage
    • Alignment accessories
    • Focusers
    • Cables & power supplies
    • Dew shields & Ventilation
    • Barlow & Erecting Lenses
    • Miscellaneous
    • Adaptors
    • Binocular viewers
  • Binoculars
    • Accessories
    • Instruments
  • Filters
    • L-RGB Filters
    • Planetary & Comet Filters
    • Pass Filters
    • Moon filters & Polarizing filters
    • Nebulae filters
    • Filter wheels & Filter sliders
    • Other
    • Blocking Filters
  • Eyepieces
  • Telescopes
  • Mountings & accessories
    • Mountings
    • Tripods & Mounts
    • Tube clamps
    • Column Stands & Extensions
    • Mounting plates and rails
    • Pole finder
    • Miscellaneous
    • Motor- & Goto-Upgrades
    • Controls
    • Counterweights
    • Equatorial wedges
Mountings & accessories / Mountings
Sale!
IOptron Mount CEM70 ECW IPolar
IOptron Mount CEM70 ECW IPolar - Image 2
IOptron Mount CEM70 ECW IPolar - Image 3
IOptron Mount CEM70 ECW IPolar - Image 4

IOptron Mount CEM70 ECW IPolar

$395.00 Original price was: $395.00.$95.99Current price is: $95.99.

SKU: YXN0C 76347 Categories: Mountings, Mountings & accessories
  • Safeguard Your Shopping Experience
  • Quality You Can Trust
  • Experience Quality, Shop with Us
  • Multiple safe payment methods
Browse
  • Binoculars
    • Accessories
    • Instruments
  • Eyepieces
  • Filters
    • Blocking Filters
    • Filter wheels & Filter sliders
    • L-RGB Filters
    • Moon filters & Polarizing filters
    • Nebulae filters
    • Other
    • Pass Filters
    • Planetary & Comet Filters
  • Mountings & accessories
    • Column Stands & Extensions
    • Controls
    • Counterweights
    • Equatorial wedges
    • Miscellaneous
    • Motor- & Goto-Upgrades
    • Mounting plates and rails
    • Mountings
    • Pole finder
    • Tripods & Mounts
    • Tube clamps
  • Telescope accessories
    • Adaptors
    • Alignment accessories
    • Barlow & Erecting Lenses
    • Binocular viewers
    • Cables & power supplies
    • Dew shields & Ventilation
    • Finder
    • Focusers
    • Miscellaneous
    • Parts & spares
    • Prisms & Diagonal mirrors
    • Straylight and glare shields
    • Transport & storage
  • Telescopes
  • Description
  • Additional information
  • Reviews (0)

Product description

More about the series CEM…

The advantages at a glance:

  • 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 30 lbs (13.6 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
  • iPolar electronic polar scope
  • Go2Nova® 8410 controller with advanced GOTONOVA® technology and a built-in heater
  • High precision tracking with low periodic error (PE <0.3 arcsec rms)
  • realtime periodic error correction (RPEC)
  • 32-channel Global Positioning System (GPS)
  • USB 3.0 powered connection
  • Integrated ST-4 autoguiding port
  • Advanced cable management system with more choices
  • Spring loaded 8″ Vixen/Losmandy dual saddle
  • Built-in Wi-Fi connectivity

Following up on the success of the iOptron CEM60 center balance equatorial mount, iOptron is introducing two new medium payload center balance mounts. The CEM70 series mounts are new standard bearers for equatorial mounts in the 70lb payload segment. The mounts are packed with advanced features, while streamlining the components resulting in a more portable imaging setup.

Retaining the inherent properties of the center balance design, these relatively compact medium payload mounts deliver what astronomers expect in an efficient, accurate and portable mount. With precise GOTO pointing and accurate tracking, the CEM70EC is a solid performer for observers and imagers alike. Innovative operational features such as the internal iPolar electronic polar scope, easy lock drive gear engagement (levers large enough to use with gloves), an advanced cable management system for the mount, iPolar, guider, and camera assure users that the CEM70 was designed with their needs in mind.

Our expert comment:

The CEM70 ECW has a high precision encoder on the RA axis.

The CEM70 ECW2 has precision encoders on both, the Dec and RA axis. Both versions have an iPolar.

(Jan Stroeher)

If there are small discrepancies when the “zero position” is first activated, iOptron has provided advice to resolve this:

“Search zero position is a function to bring the mount to a rough zero, a few degrees off is possible. At the end of Search Zero, it will ask calibration. Use arrow keys to move RA and DEC to adjust the positions to physical zero position. When done, set zero position. This position will be memorized in the controller as Zero Position.

One may further refine zero position by the following steps:

Search zero -> goto a bright star and center it ->sync to target -> goto zero position ->set zero position.

This is a true (accurate) zero position.”

(Jan Ströher)

Designation

CEM70 ECW

Total weight(kg)

24

Cable-guide

internal

GoTo system

yes

GPS

yes

Handcontroller

yes

Transport cases

yes

Tripod

without tripod

Pole finder

yes

Power pack

yes

Series

CEM CEM CEM stands for centre-balanced equatorial mount.Click to read more…

Material of worm gear

Steel

Type

Mount

Type of build

Equatorial

Useful for photographs

yes

Visually useful

yes

with hand paddle

yes

WIFI

yes

Autoguiding

yes

PEC correction

yes

Polar Alignment

iPolar

Motor type

Stepper motors (128 micro-steps)

Diameter of counterweight bar(mm)

28

Max. additional load capacity(kg)

31.8

Motor speeds

1x, 2x, 8x,16x, 64x, 128x, 256x, 512x, max ~3.75º/sec

Weight mount head only(kg)

13,6

Counterweights(piece)

1

Interfaces

Autoguider, USB

Power supply

12

Language

English

Polar elevation setting(°)

0-65

Slow-motion azimuth adjustment(°)

+/- 4

Operating temperature

-10 bis +40

Mounting saddle

Losmandy & Vixen

DEC worm shaft diameter(mm)

55

DEC ball bearings diameter(mm)

80

RA ball bearings diameter(mm)

80

DEC worm gear diameter(mm)

151

RA worm gear diameter(mm)

151

Worm gear teeth (DEC)(piece)

248

Worm gear teeth (RA)(piece)

248

Encoder

yes

Precision of tracking

0,07

RA worm shaft diameter(mm)

55

GoTo Language

English

Reviews

There are no reviews yet.

Be the first to review “IOptron Mount CEM70 ECW IPolar” Cancel reply

Related products

Sale!
Farpoint Prismenschiene Für Meade SCT 10"
Quick View

Mounting plates and rails

Farpoint Prismenschiene Für Meade SCT 10″

$139.00 Original price was: $139.00.$99.99Current price is: $99.99.
Sale!
Farpoint Dovetail Plate, Celestron 11"
Quick View

Mounting plates and rails

Farpoint Dovetail Plate, Celestron 11″

$201.00 Original price was: $201.00.$97.99Current price is: $97.99.
Sale!
Orion Optics UK Prismenschiene Vixen-Style 230mm
Quick View

Mountings & accessories

Orion Optics UK Prismenschiene Vixen-Style 230mm

$64.00 Original price was: $64.00.$44.80Current price is: $44.80.
Sale!
Geoptik Dual Losmandy/Vixen USP Prism Clamp, 300mm
Quick View

Mountings & accessories

Geoptik Dual Losmandy/Vixen USP Prism Clamp, 300mm

$257.00 Original price was: $257.00.$99.99Current price is: $99.99.
Sale!
Euro EMC Celestron CGE Pro Adapter
Quick View

Column Stands & Extensions

Euro EMC Celestron CGE Pro Adapter

$228.00 Original price was: $228.00.$95.99Current price is: $95.99.
Sale!
Losmandy FHD / Meade Field Tripod Adapter
Quick View

Mountings & accessories

Losmandy FHD / Meade Field Tripod Adapter

$348.00 Original price was: $348.00.$98.99Current price is: $98.99.
Sale!
10 Micron Pier And Tripod Flange For GM1000
Quick View

Mountings & accessories

10 Micron Pier And Tripod Flange For GM1000

$92.00 Original price was: $92.00.$64.40Current price is: $64.40.
Sale!
ADM Dovetail Bar V-Series (Vixen-Style) For RC 8"
Quick View

Mountings & accessories

ADM Dovetail Bar V-Series (Vixen-Style) For RC 8″

$182.00 Original price was: $182.00.$97.99Current price is: $97.99.
MY ACCOUNT
  • Cart
  • Checkout
  • My account
  • Wishlist
ABOUT US
  • About Us
  • FAQ
  • Returns & Exchanges
  • Delivery
  • Contact Us
LEGAL
  • Privacy Policy
  • Payment Method
  • Shipping Policy
  • Term and Conditions
Signup for Newsletter

Sign up for exclusive offers, original stories, events and more.

    Copyright 2026 © www.usopticscopes.com
    • Telescope accessories
      • Parts & spares
      • Straylight and glare shields
      • Finder
      • Prisms & Diagonal mirrors
      • Transport & storage
      • Alignment accessories
      • Focusers
      • Cables & power supplies
      • Dew shields & Ventilation
      • Barlow & Erecting Lenses
      • Miscellaneous
      • Adaptors
      • Binocular viewers
    • Binoculars
      • Accessories
      • Instruments
    • Filters
      • L-RGB Filters
      • Planetary & Comet Filters
      • Pass Filters
      • Moon filters & Polarizing filters
      • Nebulae filters
      • Filter wheels & Filter sliders
      • Other
      • Blocking Filters
    • Eyepieces
    • Telescopes
    • Mountings & accessories
      • Mountings
      • Tripods & Mounts
      • Tube clamps
      • Column Stands & Extensions
      • Mounting plates and rails
      • Pole finder
      • Miscellaneous
      • Motor- & Goto-Upgrades
      • Controls
      • Counterweights
      • Equatorial wedges
    • Login

    Login

    Lost your password?

    Register

    Your personal data will be used to support your experience throughout this website, to manage access to your account, and for other purposes described in our privacy policy.