These Kinematic Bases are used for repeated positioning of groups of units mounted on their platforms, using M6 mounting holes. Alternatively, M6 screw can be fit through a clearance hole from beneath.
Platform can be unhooked from the bottom plate together with all the units still mounted on it. It can later be replaced just as it was, with a repeatability of several arcsec.
The bases use a kinematic scheme, where three steel balls register with a cone, a v-groove, and a flat. The balls and registers are of hardened polished steel. Hooks prevent the platform from accidental movements. The bottom plate is fastened through clearance holes or a slot. 850-0020 has a revolving mounting disk – a degree of freedom of positioning.
Material – aluminium.
Finish – black anodized.