The dovetail clamp combined with the PLUS 1kg counterweight provides an excellent way to offset an unbalanced optical system. It can be installed in the front or back end of the optical system on the Vixen or Losmandy dovetail bar. You can also install more weights by screwing them together with the supplied screws.

1kg counterweight (white one at the bottom) shown with included Primaluce Lab Vixen/Losmandy compatible clamp (red one at the top).

Additional 1kg counterweights are also available separately.

Example: counterbalancing a heavy cooled dSLR camera. Sometimes it'ss easier or even necessary to use a counterweight when there is no other way to achieve correct balance. 

Images are for demonstration only. Telescopes, tube rings, cooled camera, guide camera and Eagle Core are not included in the price.