JWST on-orbit multi-field wavefront control with a Kalman filter
| Autor: | David C. Redding, Yan Zhang, John Z. Lou, Scott A. Basinger, Norbert Sigrist |
|---|---|
| Rok vydání: | 2005 |
| Předmět: |
Physics
Wavefront business.industry James Webb Space Telescope Astrophysics::Instrumentation and Methods for Astrophysics Physics::Optics Astrophysics::Cosmology and Extragalactic Astrophysics Kalman filter Orbital mechanics Optical telescope law.invention Telescope Optics law Robustness (computer science) Astrophysics::Earth and Planetary Astrophysics business Adaptive optics Astrophysics::Galaxy Astrophysics |
| Zdroj: | SPIE Proceedings. |
| ISSN: | 0277-786X |
| Popis: | An effective multi-field wavefront control (WFC) approach is demonstrated for the James Webb Space Telescope (JWST) on-orbit optical telescope element (OTE) fine-phasing using wavefront measurements at the NIRCam pupil, and the optical and computational implications of this approach are discussed. The integration of a Kalman Filter as an optical state estimator into the JWST wavefront control process to further improve the robustness of the fine-phasing JWST OTE alignment will also be discussed. Through a comparison of WFC performances between the JWST on-orbit and ground-test optical system configurations, the connection (and a possible disconnection) between WFC and optical system alignment under these circumstances are analyzed. Our MACOS-based [2] computer simulation results will be presented and discussed. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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