iOptron CEM70 mount: center-balanced, powerful and precise (70 lb - 31.8 kg)
Visit iOptron CEM70 is a high-performance center-balanced equatorial (CEM) mount, capable of supporting up to 31.8 kg (70 lb)while weighing only 13.6 kg (30 lb). This charge ratio (~2.33) makes it particularly practical for both nomadic and stationary astrophotography.
Designed entirely in metal, it features a duo of 151 mm (248-tooth) gears, a very low periodic error (< ± 3.5 arcsec P-Peak) and permanent PE correction (PPEC) for ultra-precise tracking.
Its Go-To microprocessor (Go2Nova 8407/8410) includes a database of over 200,000 objects, 32-channel GPS and heated LCD screen. Polar alignment is performed via the integrated electronic iPolar.
| Features |
Detail |
| Frame weight |
13.6 kg (30 lb) |
| Payload |
31.8 kg (70 lb) without counterweight |
| Ratio |
≈ 2,33 |
| Worm period |
348 s |
| Periodic error |
< ± 3.5 arcsec (< ± 5″ for encoded versions) |
| Rotation speed |
3,75°/s (×900) |
| Range latitude |
0°-65° |
| Power supply |
12 V DC, 5 A |
| Controllers |
Go2Nova 8407/8410 + GPS + iPolar |
| Connections |
USB, ST-4, 2× 12 V, 3×USB2.0, DC |
| Cart |
Losmandy/Vixen 8″ clog |
| Temperature |
-10 °C to +40 °C |
| Warranty |
2 years limited |
The version CEM70G (or CEM70+Wi-Fi/USB3) adds iGuider (on-board autoguider), a reinforced management cable, and USB 3/Wi-Fi ports for direct PC control.
Users confirm its reliability: "tracking accuracy is amazing... 0.4″ RMS" on a RC 1625 mm, and use with EdgeHD 11 + ZWO2600mc for long exposure astrophotography.
SummaryThe CEM70 combines portability, remarkable capacity, Go-To precision, optimal tracking and integrated accessories (GPS, iPolar, iGuider in G version), making it a solid choice for the demanding astrophotographer.
