2.5KG COUNTERWEIGHT FOR CEM40, CEM60, CEM70 SHARPSTAR18 the sharpness of the image

the sharpness of the image is compromise to a level that the image has to be cropped

a precise 50mm hole offers a smooth movement on the shaft and facilitates the balancing operations while the stainless steel guarantees no corrosion

3 kg (head) + 7

ensures a good protection for your GM2000 mount

Best performance with F/15 - F/30 refractors or Mak's full aperture

2.5KG COUNTERWEIGHT FOR CEM40, CEM60, CEM70 SHARPSTAR18 the sharpness of the imageThis 2. 5kg counterweight will fit the following iOptron mounts: Mount with a counterweight shaft smaller than 28mm in diameter CEM70 CEM70EC CEM70G CEM60 CEM60EC GEM45 GEM45EC GEM40G CEM40 CEM40EC CEM40G* (for late version with 28mm CW shaft) iEQ45 Pro iEQ45 It can also be used for any other mount that has a 28mm diameter counterweight shaft. Specifications Weight 2. 5 kg (5. 5 lbs) Outer diameter 118 mm (4. 6") Inner diameter 28. 5 mm (1. 12")