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This iOptron 2 kg (4.5 pound) counterweight lets you balance a heavy optical tube and heavy accessory load (such as a photoguide scope, accessory dovetail, mounting rings, and a camera) on a variety of iOptron computerized go-to equatorial mounts.

The mounts each come standard with one approximately ten pound counterweight suitable to balance payloads up to 15-18 pounds, depending on the mount. Adding one of these 4.5 pound counterweights to the mount (or an optional 9.8 pound counterweight #3006) will let you balance payloads up to the mounts' respective maximum payloads. 

A hand-tighten knob holds the counterweight in place on each mount's 20mm (0.78") diameter declination shaft. The counterweight measures 4.6" in diameter and 1" in height.

Compatible Mounts:
  • CEM26/CEM26EC
  • HEM27/HEM27EC
  • GEM28/GEM28EC
  • HEM44/HEM44EC
  • AZ Mount Pro
  • iEQ30/iEQ30 Pro
  • CEM25/CEM25P/CEM25EC
  • ZEQ25
  • MiniTower Pro
  • MiniTower II
  • MiniTower
  • CEM40/CEM40EC* (early version with 20mm CW shaft)
* Check your CEM40/CEM40EC mount CW shaft diameter before ordering.

It can be used for other mount with a 20mm diameter counterweight shaft.

Tech Details: 

Weight: 2 kg (4.5 lbs.)
Outer diameter: 118 mm (4.6 in.)
Inner diameter: 20.5 mm (0.8 in.)
Height: 25 mm (1 in.)
Locking mechanism Locking screw with pin
Locking screw thread size M8

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