Adaptor plate – mates Eris 2″ focuser to tube diameter 225mm.

Black anodised

4 x mounting screws secures the Eris focuser. Slacken off to rotate around the central axis.

Fits tube diameters 225mm

4 x hole centres 53mm radius @ 90 degrees to each other.

Outside dimension 90mm square

Central hole diameter 80mm

8 x small tilt adjustment screws, will need the tube fixing  screws slack to work.

11mm in height on centre axis.