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, Ø 110 mm, zero backlash
Declination Worm Wheel 216 teeth, Ø 110 mm, zero backlash
Right Ascension Axle Ø 45 mm, steel
Declination Axle Ø 45 mm, steel
Right Ascension Bearings Ø 68 mm
Declination Bearings Ø 68 mm
Counterweight Shaft Ø 20 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
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" (none, 2", or tripier optional)
Hard case CEM40EC standard, CEM40 optional
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