Riding the wave of success from our iOptron CEM60 center-balanced equatorial mount, we're stoked to roll out our latest game-changers in the 70lb payload category: the CEM70 and CEM70G. While both mounts are loaded with cutting-edge features, the CEM70G takes it a step further with an in-built optical guiding system, making it a trailblazer in its class. This feature not only enhances tracking precision but also makes the whole rig more travel-friendly.
Keeping the core advantages of the center-balance design, these medium payload champs offer everything an astronomer could want—accuracy, portability, and efficiency. With dead-on GOTO accuracy and tracking (PE <±5 arcsec), the CEM70 is a real heavy-hitter, ideal for sky-watchers and shutterbugs alike.
As for user-centric features, we've got you covered. The internal iPolar electronic polar scope, glove-friendly gear-locking levers, and a sleek cable management system are all part of the package. So, yeah, we've designed the CEM70 and 70G with you in mind. No compromises.
Features:
- Fresh, center-balanced equatorial mount (CEM) designed for top-notch payload capacity and intrinsic stability.
- Perfect for both stargazing and astrophotography.
- Carries up to 70 lbs (31.8 kg) while weighing in at just 30 lbs (13.6 kg).
- Gear clutches that are a breeze to engage.
- Fine-tune adjustments in both altitude and azimuth.
- Stepper motor precision at 0.07 arcsec—ideal for pinpoint GOTO and accurate tracking.
- iPolar™ electronic polar scope built in.
- Go2Nova® 8410 controller comes with Advanced GOTONOVA® GOTO tech and a built-in heater.
- Low periodic error (PE) tracking at <±5 arcsec.
- Permanent periodic error correction (PPEC).
- 32-channel GPS, so you always know where you are.
- USB connectivity.
- ST-4 autoguiding port integrated.
- Cable management system that gives you options.
- 8" Vixen/Losmandy dual saddle with spring loading.
- NEW iOptron subsidized TheSky Imaging Edition bundled in.
What’s in the Box
Box 1 of 2 (#C702A)
- 1x CEM70 mount head, complete with hard case and accessories.
Box 2 of 2 (#7226):
- 1x 9.5kg counterweight.
Specifications
| Mount | Center-balanced Equatorial Mount (CEM) |
| Payload* | 31.8kg (70 lbs), exclude counterweight |
| Mount weight | 13.6kg (30 lbs) |
| Payload/Mount weight ratio | 2.33 |
| Material | All metal |
| Latitude adjustment range | 0°~ 65° |
| Azimuth adjustment range | ± 4° |
| PE (by encoder)** | < ±5 arcsec |
| Worm period | 348 sec |
| PEC | PPEC |
| Right Ascension worm wheel | Φ151mm, 248 teeth |
| Declination worm wheel | Φ151mm, 248 teeth |
| Worm | Φ21.2mm |
| Right Ascension axle | Φ55mm, steel |
| Declination axle | Φ55mm, steel |
| Right Ascension bearings | Φ80mm |
| Declination bearings | Φ80mm |
| Counterweight shaft | Φ28x 415 mm (SS, 1.9kg) |
| Counterweight | 9.5 kg (20 lbs) x1 |
| Mount base size | Φ152mm |
| Motor drive | Precision stepper motor w/128 micro-step |
| Resolution | 0.07 arc seconds |
| Slew speed | 3.75°/sec (900x) max. |
| Hand Controller | Go2Nova® 8410, 8 line 21 character LCD |
| Power requirement*** | DC 12V, 5A (5.5mm/2.5mm plug) |
| Power consumption | 0.6A(Tracking),0.8A(GOTO) |
| Polar Scope | Internal electronic polar scope, iPolar |
| Meridian treatment | Stop (0-10° pass), auto flip |
| Zero position | Automatic zero search |
| Park position | Horizontal, vertical, current, alt/azi input |
| Level indicator | YES |
| Dovetail saddle | 8" Losmandy D & Vixen |
| GPS | YES |
| Guiding port | ST-4 |
| Communication port | USB2.0 |
| Cable management | 2xDC12V (3A), 3xUSB2.0, 1xDC in/1xDC out, iPort. 1X USB input for mount and USB hub |
| Operation temperature range | -10°C ~ +40°C |
| Hard case | YES |
| Pier/Tripod | Optional LiteRoc tripod (8023ACC) or pier |
| Warranty | Two year limited |
* OTA size and length dependent.
** Measured with encoder on the bench, 348 seconds
*** Included AC adapter is for indoor use only