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- Unique design, Center-Balanced equatorial mount (CEM) for maximum payload and minimum mount weight
- Idea for both visual observation and astrophotography
- Maximum payload of 40 lbs (18 kg) with the mount weight of only 17.4 lbs (7.9 kg)
- All metal, CNC machined with red/black anodized
- Easy to use quick-lock gear clutches
- Integrated iPolarTM electronic polar finder
- Low periodic error (< ± 7 arc seconds)
- Permanent periodic error correction (PPEC)
- Precision stepper motor for precise GOTO and accurate tracking
- Go2Nova® 8407+ controller with Advanced GOTONOVA® GOTO Technology with built-in heater
- Integrated ST-4 autoguiding port
- 32-channel Global Positioning System (GPS)
- USB communication port
- Cable management system
- 6" Losmandy D & Vixen dual dovetail saddle
- Standard LiteRoc 1.75" inch heavy-duty stainless steel tripod (7kg/15 lbs)
- Hard case
- Optional WiFi for mount control via SmartPhone/Tablet/Computer
Manufacture |
iOptron |
Model |
CEM40/CEM40EC |
Mount Type |
Chinese Equatorial Mount (CEM) |
Payload (excl. CW) |
18 kg (40 lbs), exclude counterweight |
Mount Weight |
7.2 kg (15.8 lbs) |
Payload/Mount Weight |
2.5 |
Structure Material |
All metal, CNC machined |
Exterior Finish |
Anodized red/black |
Latitude Adjustment Range |
0~60° (special CW shaft mounting if < 10° ) |
Azimuth Adjustment Range |
±6° |
Tracking Accuracy (PE) |
< ±7 arcsec / < 0.25 arcsec RMS (EC) |
Period |
400 sec |
Worm diameter |
17 mm |
Right Ascension Worm Wheel |
216 teeth, Ø110 mm, zero backlash |
Declination Worm Wheel |
216 teeth, Ø110 mm, zero backlash |
Right Ascension Axle |
Ø45 mm, steel |
Declination Axle |
Ø45 mm, steel |
Right Ascension Bearings |
Ø68 mm |
Declination Bearings |
Ø68 mm |
Counterweight Shaft |
Ø20 x 410 mm (SS, 1 kg) |
Counterweight |
4.5 kg (10 lbs) x1 |
Mounting Base Diameter |
Ø125mm |
Motor |
precision stepper motor, 1.8°/128 micor-step |
Motor Resolution |
0.08 arcsec (200 PPS) |
Hand Controller |
Go2Nova 8407+; 8 line 21 character LCD |
Star Database |
359,000+, star identification |
Power |
DC 12V, 5A |
Power Consumption |
0.6A (tracking), 0.9A (GOTO) |
Polar Scope |
Internal iPolar eletronic polar scope (most configurations) |
Meridian treatment |
Stop (0-10° pass), flip |
Zero position |
Automatic zero search |
Dovetail saddle |
iOptron Universal saddle, 5" |
Max slew speed |
4.5°/sec (1080x) |
PEC |
PPEC/Real time PEC (CEM40EC) |
Guiding Port |
ST-4 |
Communication Port |
USB |
GPS |
YES |
WIFI |
External (optional) |
Cable Management |
DC12V (3A), ST4,USB |
Tripod |
1.5", 1.75" tripod options |
Hard case |
Some Configurations |
- CEM40 Mount Head
- iPolar Electronic Polar Scope
- Counterweight shaft
- 10 lbs counterweight x 1
- Go2Nova 8407 Hand Controller with cord
- 1.75" Tripod (select configurations)
- Hard Case (select configurations)