Citation
Abstract
A study of deformable-mirror performance versus the number of actuators on the mirror and their locations is summarized. Influence functions are used to model the efiect of the actuators on the deformable mirror’s shape. This simplified model is su–cient for the purpose of this study. It has the advantage that no finite-element model for the mirror is required, and therefore a large number of scenarios may be studied with minimal overhead. The first case studied concerns compensation for the measured distortion of DSS 13 at an elevation angle of 12.7 deg. Results are given for distortion compensation versus deformable-mirror location and the number of actuators on the mirror. A rectangular grid of actuators at various densities is studied along with an actuator configuration specifically designed for this distortion. This actuator configuration is presently used in the experimental deformable mirror. Results are also presented for compensation versus elevation angle using a distortion model based on measurements taken at DSS 43.
Keywords
Details
- Volume
- 42-147
- Published
- November 15, 2001
- Pages
- 1–14
- File Size
- 482.4 KB