Active secondary mirror mount

摘要

An active secondary mirror mount is used in a telescope requiring the mount have five degrees of freedom in movement. The spider legs are connected between the telescope tube and a central housing. Within the central housing are two concentrically mounted tubes. The outer tube is fixedly held by the central housing and the inner tube is flexibly held within the outer tube. X-axis and Y-axis actuator rods pass through the spider legs to act upon the inner tube. The inner tube has a focus actuator mounted on one end with an actuator shaft passing through the inner tube to the other end having the secondary mirror mounted thereon. Flexures are mounted to the inner tube and have the actuator shaft passing therethrough.