SKU: 35058837860

iOptron CEM40EC EQ Mount GoTo with High Precision RA Encoder & LiteRoc Tripod

Sale price$1799.55 Regular price$1999.50
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Ships within 48 hours · Estimated delivery Aug 25 - Aug 30

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Description

iOptron CEM40EC EQ Mount GoTo with High Precision RA Encoder & LiteRoc TripodDescription The mount head weighs only 8. 2 kg, yet can support a payload of up to 18 kg. This extremely good payload to weight ratio of 2. 5 makes the CEM40 versatile. You can easily carry it to your favourite place under a dark sky or at your backyard observatory. But there are more advantages: An integrated electronic polar finder scope (iPolar) ensures accurate alignment even at times when the pole star is obscured. Large levers on its quick lock

Description

The mount head weighs only 8.2 kg, yet can support a payload of up to 18 kg. This extremely good payload to weight ratio of 2.5 makes the CEM40 versatile. You can easily carry it to your favourite place under a dark sky or at your backyard observatory.

But there are more advantages:

  • An integrated electronic polar finder scope (iPolar) ensures accurate alignment even at times when the pole star is obscured.
  • Large levers on its quick-lock drive engagement system make it easy to snap its 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 mount comes with the new Universal Self-Centering Saddle for Losmandy and Vixen style dovetails.
  • The CNC body looks sharp but is really robust.

The GoTo-Technology features a Go2Nova 8407+ controller with integrated heater for its large display, a 212,000 object library, integrated 32-channel-GPS and ST-4 auto guiding port.

Another great feature besides the centre-balance is the ultra-quiet low power consumption stepper motor drive systems. Both models of the CEM40 are precise trackers, the CEM40-EC version delivering <0.25 arcsecond accuracy with its high-resolution encoder and its real time periodic error correction (RPEC).

The CEM40 is a extremely versatile and advanced mount.

With or without encoder: The mount is available in two versions, both of which track your optics precisely in the night sky. The variant with high-resolution encoders (EC) on both axes achieves an accuracy of less than 0.25 angular seconds and corrects the periodic screw error in real time! As a result, guiding is no longer necessary in astrophotography.

This mount already comes with iOptron's newly developed LiteRoc tripod.

The mount comes with the LiteRoc 1.75" tripod delivers rock solid stability in a lighter, more compact package. It also has improved leg cuffs and sockets for more rigidity and redesigned leg lock levers.

Specifications

Capacity

Max. additional load capacity (kg)  18
Counterweight(s) (piece)  1 (4,5kg)
Interfaces  USB
Language English
Polar elevation setting (°) 0 - 60
Mounting saddle Losmandy & Vixen
DEC ball bearings diameter (mm) 68
RA ball bearings diameter (mm) 68
DEC worm gear diameter (mm) 110
RA worm gear diameter (mm)  110
Worm gear teeth (DEC) (piece) 216
Worm gear teeth (RA) (piece) 216
DEC worm shaft diameter (mm) 17
RA worm shaft diameter (mm) 17
RA axis diameter (mm)  45
DEC axis diameter (mm) 45
Diameter of counterweight bar (mm) 28
Long counterweight rod (mm) 410
Weight mount head only (kg) 8,2
Slow-motion azimuth adjustment +/- 6
Input voltage 12
Amperage (A) 5
Stepper motors 1.8°/128 micro-steps
Cable-guide external
Encoder yes

Special features

GoTo system  yes
Handcontroller yes
Level yes

Equipment

Tripod <p> Tripod
Carrying case yes
Pole finder yes

Tripod

Tripod leg diameter (mm)         45
Tripod material Steel

General

Series CEM 
Type Mount
Type of build Equatorial

GoTo control

Precision < 0,25
GPS yes
WIFI optional
PEC correction yes
Polar Alignment iPolar
GoTo Language English
Software Go2Nova 8407
Autoguiding yes
Interfaces Autoguider, USB
Database 212.000
Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 35058837860

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4.3 ★★★★★
Based on 27 reviews
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Mack Mackenzie
Natrona Heights, US
★★★★★ 4
These are very thick pillows.
Exactly as advertised. They are very firm and very thick. They're too thick for me to be able to use as bed pillows. However, they seem to work pretty well as cushions in my papasan chair on top of its normal cushion also work very well as decorative pillows. I'm still giving them four stars because they're exactly as advertised and they seem well made. My only complaint is that they're just too thick. And that's definitely not the fault of the pillows or the pillow maker.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 12, 2026
R
Verified Purchase
Robin Smith
Phoenix, US
★★★★★ 5
how good the product is
Item Package Quantity: 4, Size: Standard
These pillows are soft, fluffy, and surprisingly supportive for the price. They’re comfortable no matter how you sleep — whether on your side, back, or stomach — and they maintain their shape well overnight without going flat. The fabric cover feels smooth and breathable, keeping things cool through the night. After a few days of fluffing and use, they settle nicely into a perfect medium firmness. They also wash and dry easily without clumping. Overall, a great‑value pillow set that offers comfort, versatility, and quality — ideal if you need an affordable yet cozy bedding refresh.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 10, 2026
J
Verified Purchase
“Just Me”, LMT
Pawtucket, US
★★★★★ 5
Great Quality for a Great Proce!
Item Package Quantity: 2, Size: King
These pillows are very comfortable and maintain their shape. Quality is as described at a comfortable price for the quality! The pillows are comfortable; not overly firm nor flat. The density is medium and supportive; very comfortable!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 24, 2026
M
Verified Purchase
MF
Grantham, US
★★★★★ 5
Firm and comfortable
Item Package Quantity: 2, Size: Standard
These pillows are well made. Firm, yet comfortable. I am pretty rough with my pillows. I toss and turn frequently. After one year, they are still holding up.
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Reviewed in the United States on May 17, 2026
J
Verified Purchase
Japilla
Massapequa, US
★★★★★ 4
Quite good. I am actually surprised. Too small for queensize
Item Package Quantity: 2, Size: Queen
These pillows are actually good. After reading a ton of reviews I pulled the trigger on these. I was 100% sure I was going to receive bad quality pillows (too flat or too thick). They do take 24-48 hours to firmen up. Let's see if they flatten out in a few weeks or if they hold up. My wife said the pillow was too thick and it raised her head too much. I don't agree, I sleep perfect on these, no neck pain in the morning. Update 04/24 These are actually quite small to be considered queen pillows. They have become firm over the last few days.
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Reviewed in the United States on April 20, 2026

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