iOptron CEM40 "Standard" GOTO Centre Balanced Equatorial Mount

Product code: C402A3
in stock
£1,600.00 (ex. VAT)
You will earn 1920 loyalty points with this purchase

Product information

NOTE:  New stock arrived limited stock remaining

Introducing the CEM40 & CEM40EC next generation, centre-balanced equatorial mounts! The CNC body looks sharp however it's beauty is more than skin deep. The head weighs only 7.2kg (15,8lbs) yet can support a payload of 40lbs. An integrated electronic polar scope (iPolar) ensures accurate alignment even when the pole star is obscured. Large levers on it's quick-lock drive engagement system make it easy to snap it's gears into place even when wearing gloves. There's little chance of your cables getting snagged with the CEM40's internal cable management system.

The CEM40 incorporates iOptron's new patent-pending Universal Self-Centring Saddle (USCS). The USCS accommodates standard 75mm Losmandy-style and 45mm Vixen-style dovetail plates. Both the CEM40 and CEM40EC have ultra-quiet low power consumption stepper motor drive systems. The CEM40's are precise trackers and the EC version delivers ,0.25 Arc second accuracy with it's high resolution encoder. Other features such as on-board GPS, 359,000+ object library with star-identification make these portable and capable mounts a sure choice for modern imagers.

  • Unique design, centre balanced equatorial mount (CEM)
  • Ideal for both visual observation and astrophotography
  • Large easy to use quick-lock gear clutches
  • Integrated iPolar electronic polar finder
  • Max payload of 40lbs (18kg) with the mount head weight of only 15.8lbs (7.2kg)
  • Precision stepper motor for precise GOTO and accurate tracking
  • Go2Nova 8407+ controller with advanced GO2Nova GOTO technology and built-in heater
  • Permanent periodic error correction (PPEC) on the CEM40 or real-time PEC (RPEC) for the CEM40EC
  • Built in 32 channel GPS
  • Integrated ST4 auto guiding port compatible with Altair MG32 and MG60 guide scopes and GPCAM Guide Camera packages.
  • Advanced cable management system with more choices
  • New, patent-pending Universal Self-Centring Saddle (USCS) (dual Vixen/Losmandy)
  • WiFi with optional external adapter
  • CNC machined metal body
  • Includes tripod, optional Tri-Pier available

Choose your model in the drop-down menu when ordering:

CEM40 with 1.5" steel tripod:
#7400 includes CEM40 mount head, CW shaft, 10lb Counterweight, GO2Nova 8407+ hand controller with cord.
Comes in two boxes, box 7420 (mount head) and box 7421 (1.5" steel tripod).

CEM40 head only:
#7401 CEM40 head only, no tripod, no iPolar, no counterweight.

CEM40EC with 1.5" steel tripod:
#7400EC includes CEM40 mount head with high resolution RA encoder for real time PEC (RPEC), CW shaft, 10lb Counterweight, GO2Nova 8407+ hand controller with cord.
Comes in two boxes, box 7420-EC (mount head) and box 7421 (1.5" steel tripod).

Model CEM40/CEM40EC
  • Mount Type Chinese Equatorial Mount (CEM)
  • Payload (excl. CW) 18 kg (40 lbs), exclude counterweight
  • Mount Head Weight excl. Counterweights 7.2 kg (15.8 lbs)
  • Structure Material All metal, CNC machined
  • Exterior Finish Anodized red/black
  • Latitude Adjustment Range 060° (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
  • 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
  • WIFI External (optional)
  • Cable Management DC12V (3A), ST4,USB
  • Tripod 1.5" (none, 2", or tripier optional)
  • Hard case CEM40EC standard, CEM40 optional

Altair Astro and iOptron reserve the right to change product specifications and price at any time.

Availability: Please click the "notify when in stock button" to receive an instant notification when product is ready to ship.

Product Info

GTIN 6943831520061
MPN 7403A-HC
MPN 7403A-HC
Brand iOptron
Product Code C402A3
Delivery Weight Package